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verified KSD ACADEMY • OFFICIAL TRAINING PORTAL

Excellence in Jewelry, Trust in Commerce

As the Konya Goldsmiths and Jewelers Association, we bring centuries of Ahilik trade ethics together with modern industry knowledge. We offer professional qualification to our jewelers and transparent guidance in gold and jewelry to our citizens.

700+

Years of Ahilik Tradition

verified Information

Verified Knowledge

Comprehensive Terms & Guides

Interactive Quiz Questions

storefront Trade Academy shield_person Consumer Guide menu_book Knowledge Library (16 Lessons) quiz Proficiency Test menu_book Glossary of Terms edit_note Training Application

Training & Development Programs

Academy Paths Tailored to Your Needs

Specialized modules for practicing jewelers and conscious gold & jewelry buyers

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Module 1 • Professional

Merchant & Staff Academy

Training for jewelry store owners, sales staff, and workshop masters on counterfeiting prevention, legal regulations, and customer satisfaction.

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Counterfeit & Low-Karat Gold Detection

Touchstone, acid testing, density measurement, and modern XRF spectrometer principles.

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Natural vs Lab-Grown (CVD/HPHT) Diamonds

Counter-side detection of synthetic diamonds, certificate verification, and disclosure standards.

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MASAK, Tax & Legal Compliance

Identity verification obligations, cash transaction limits, and suspicious transaction reporting guide.

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Apprenticeship, Journeyman & Master Certification

Apprentice training and mastery examinations conducted in partnership with MESEM and KSD.

Certificate of Attendance & Qualification Apply for Training →

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Module 2 • Smart Shopping

Consumer & Investor Guide

Guiding principles for citizens to make informed decisions, choose the right items, and access reliable information during wedding and gift jewelry purchases.

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Gold Hallmarks & Millesimal Fineness

Meaning and verification of 24K (995/999.9), 22K (916), 18K (750), 14K (585) and 8K (333) hallmarks.

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Jewelry Craftsmanship vs Investment Gold

Buy-sell spreads for Republic coins and bullion bars versus high-craftsmanship jewelry.

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KSD Member Directory & Verification

Confirm the registered membership information of the jeweler you shop from via our portal.

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Invoices, Certificates & Consumer Rights

Keeping receipts and certificates; mediation support via the KSD Consumer Complaint Desk in case of fineness disputes.

Safe Shopping Guide Verify Jeweler →

menu_book KSD JEWELRY ACADEMY

Gold and Jewelry Knowledge Library

Core lessons, technical analyses and the 8 critical questions and answers everyone should know when buying gold

79 Au Gold

school Lesson Module 1

LESSON 1 — WHAT IS GOLD?

verified KSD Academy Content

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Gold is a precious metal found in nature, with the chemical symbol Au. Its atomic number is 79.

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Throughout human history it has been used as jewelry, ornament, money and a store of value.

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Among gold’s most important properties are that it is easy to work and can be drawn into wire and beaten into sheet, its high electrical conductivity and its resistance to corrosion.

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Pure gold is naturally yellow. However, because it is very soft, it is usually mixed with other metals and made into an alloy for jewelry intended for everyday wear.

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By adding metals such as silver, copper and palladium to gold, alloys of different hardness and color can be obtained.

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The purity of gold is expressed by the karat or millesimal fineness system.

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Remember:

The value of gold comes not only from its appearance, but from its purity, its weight and its intended use.

— KSD Jewelry Academy

Fineness 24K Karat

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LESSON 2 — WHAT IS KARAT IN GOLD?

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The karat of gold expresses the proportion of pure gold in a product.

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In the karat system, pure gold is taken as 24 karat. Other karats are determined by the amount of gold in the alloy.

format_list_bulleted Standard Gold Karats and Purity Ratios

24 Karat Gold 999.9 Fineness

Refers to gold of approximately 99.9% purity. It is generally used in bullion bars and investment products.

22 Karat Gold 916 Fineness

Contains approximately 91.67% pure gold. It is widely used in the production of bangles and various traditional jewelry.

18 Karat Gold 750 Fineness

Contains 75% pure gold. It is especially preferred in fine jewelry production.

14 Karat Gold 585 Fineness

In theory, the 14/24 calculation corresponds to 58.33% pure gold. In jewelry manufacturing and trade standards, however, a purity of 58.50% (585 fineness) is taken as the basis and the 585 hallmark is stamped.

8 Karat Gold 333 Fineness

Contains approximately 33.33% pure gold.

As the karat of gold decreases, the proportion of other metals in the alloy increases. However, this does not mean that every lower-karat product is of higher quality or more durable.

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Durability Criterion: A product’s durability depends not only on its karat, but also on the composition of the alloy (the type and proportion of the metals added) and the production method applied.

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Important Information:

Karat indicates a product’s purity; on its own it does not determine the quality of workmanship or the value of the design.

— KSD Jewelry Academy

Per Mille 1000‰ Fineness

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LESSON 3 — WHAT IS MILLESIMAL FINENESS?

verified KSD Academy Content

Millesimal fineness is the measurement system that expresses the purity of precious metals in parts per thousand.

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For example, if a gold product is marked 750, this indicates that 750 parts per thousand, i.e. 75%, of the alloy is gold.

table_chart Common Karat and Fineness Equivalents

Karat	Fineness (Hallmark)	Pure Gold Ratio
24 Karat	999	%99,9
22 Karat	916 or 917	Approx. 91.67%
18 Karat	750	%75
14 Karat	585 (theoretical 583)	58.50% (Theoretical 58.33%)
8 Karat	333	Approx. 33.33%

* The values in the table are nominal karat equivalents and common hallmark notations. The legal purity tolerances of products are assessed separately.

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Karat Hallmarks: The karat hallmarks on jewelry inform the consumer. However, the presence of a hallmark on a product does not by itself prove that the product is of the stated karat.

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Reliable Analysis: When a reliable karat determination is needed, appropriate analysis methods such as the touchstone, the acid test and the XRF spectrometer should be used.

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KSD Professional Standards Principles:

Our KSD member goldsmiths undertake to comply with the principles of purity, karat hallmarking and honest trade that our association recommends and that the industry has adopted.

— KSD Jewelry Academy

Metal & Art Jewelry

diamond Lesson Module 4

LESSON 4 — ARE GOLD AND JEWELRY THE SAME THING?

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Factors Affecting Price

The design of the piece, its production technique, workmanship, the gemstones used and its other features can also affect the selling price.

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Practical Example

For example, two rings of the same weight and the same karat may be sold at different prices. The reason may be differences in design, workmanship and the materials used.

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Informed Shopping Principle: For this reason, when buying jewelry, attention should be paid not only to the weight and karat, but to all the features of the product.

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Academy Principle:

Gold is a raw material; jewelry is a product in which knowledge, design and labor come together.

— KSD Jewelry Academy

Cost & Workmanship Price

price_change Lesson Module 5

LESSON 5 — WHY IS JEWELRY OF THE SAME KARAT SOLD AT DIFFERENT PRICES?

verified KSD Academy Content

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Two pieces of gold jewelry of the same karat and the same weight may have different selling prices.

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This is because karat shows the proportion of pure gold in the product. However, it does not express all the features of the product or its production cost.

format_list_bulleted Main Reasons for Price Differences

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Design and Model Features

Original modeling, patented design and research and development work.

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Handcraft or Machine Production

The difference between the hand labor of master artisans and automated press stamping.

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Production Techniques

Precision casting, filigree weaving, enamel art or laser engraving.

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Gemstones Used

The quality and clarity of the stones and the setting technique.

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Workmanship and Quality Control Costs

Zero porosity, flawless polish and durability inspections.

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Commercial Expenses & Pricing Policy

Businesses’ service, certification and corporate warranty expenses.

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Practical Example: For example, even if two 14 karat rings weigh the same, producing one of them may require more workmanship.

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Informed Consumer: For this reason, it is important that consumers evaluate not only the price per gram but all the features of the product when buying gold jewelry.

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Academy Principle:

Karat shows the proportion of gold; quality emerges across the whole of production.

— KSD Jewelry Academy

Color & Alloy Karat

palette Lesson Module 6

LESSON 6 — DOES THE COLOR OF GOLD INDICATE ITS KARAT?

verified KSD Academy Content

palette

The natural color of gold is yellow. However, gold alloys in different colors are used in jewelry making.

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One of the main factors determining the color of gold is the other metals used in its alloy.

format_paint The Most Common Gold Colors in Jewelry and Their Alloy Properties

Yellow Gold

This is the natural color of gold. In jewelry production it is balanced with a silver and copper alloy to preserve workability and color.

White Gold

Palladium or similar light-colored metals are used in the production of white gold; it is usually rhodium-plated for the final shine.

Rose (Red) Gold

Increasing the proportion of copper in the alloy gives gold a warm pinkish or reddish tone.

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Same Karat, Different Colors: Two gold products of the same karat (for example 14 or 18 karat) can be produced in completely different colors.

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Karat Determination Criterion: For this reason, the karat of a product cannot be determined with certainty by looking at its color.

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Academy Principle:

The color of gold is not a definite indicator of its purity.

— KSD Jewelry Academy

Gross & Net Weight

scale Lesson Module 7

LESSON 7 — IS THE ENTIRE WEIGHT OF JEWELRY ON THE SCALE GOLD?

verified KSD Academy Content

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Gold jewelry may not consist entirely of gold.

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The additional elements found in some jewelry may be included in the product’s total (gross) weight on the scale.

extension Main Materials and Parts That May Be Found in Jewelry

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Gemstones

Decorative stones such as brilliant-cut diamonds, diamonds, emeralds, sapphires or zircon.

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Springs & Wires

Steel springs used in clasp, clip and safety mechanisms.

Different Metals

Alloy components found in strength and solder areas.

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Auxiliary Parts

Setting prongs, filler bodies and fastening elements.

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Practical Example: For example, the total weight of a stone-set ring on the scale does not show the weight of the gold alloy alone.

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Weight Distinction: For this reason, especially in jewelry that is stone-set or contains different materials, it is important to separate the total weight from the gold weight.

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Informed Consumer: Consumers need to know the karat and total weight of the product they buy and, if any, the materials in it other than gold.

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Academy Principle:

Accurate information is the foundation of trustworthy jewelry trade.

— KSD Jewelry Academy

Professional Ahilik Expertise

psychology Lesson Module 8

LESSON 8 — HOW WELL SHOULD A JEWELER KNOW THE PRODUCT THEY SELL?

verified KSD Academy Content

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Jewelry trade is not merely buying and selling a product.

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A jeweler must know the technical features of the product they sell and be able to give the customer accurate information.

checklist 7 Core Topics a Jeweler Must Master

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The Product’s Karat and Gold Content

Millesimal fineness, legal tolerances and hallmark compliance.

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Properties of the Alloy Used

Coloring metals, the hardness of the alloy and its mechanical properties.

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Production Method

Casting, pressing, filigree, electroforming or handcraft technique.

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Workmanship Features

Surface polish, clasp strength and assembly details.

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Gemstones in the Product

The type of stone, setting style, clarity and carat information.

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Use and Care Conditions

Advice on protection from chemicals, storage and polishing.

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Warranty and After-Sales Services

Resizing, repair support, maintenance and corporate professional responsibility.

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Professional Responsibility and Trust: Informing the customer accurately ensures both the protection of the consumer and stronger trust in the profession.

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Academy Principle:

A jeweler should know not only the price of the product they sell, but the product itself.

— KSD Jewelry Academy

Setting & Stone Care

diamond Lesson Module 9

LESSON 9 — WHY DO STONES FALL OUT OF JEWELRY?

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One of the problems that can be encountered with gold and fine jewelry is a stone coming loose or falling out of the piece.

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However, a stone falling out of a piece of jewelry does not always mean there is a manufacturing defect. There are various factors that can cause a stone to fall out.

troubleshoot 5 Main Factors That Can Cause a Stone to Fall Out

Production and Setting Errors

The stone not being seated correctly, the prongs holding the stone not being strong enough, or the setting being done incorrectly.

Impacts and Snagging

During everyday wear, the piece striking a hard surface, getting caught or being subjected to mechanical pressure can affect the stone’s setting.

Wear Over Time

Especially in jewelry worn for a long time, the prongs holding the stone can wear down, thin and weaken, or change shape.

Conditions of Use

Wearing the piece in conditions unsuited to its purpose, using it during heavy physical work or exposing it to constant impacts.

Lack of Care and Inspection

It is important to have stone-set jewelry checked at regular intervals. When loose stones and worn prongs are noticed early, the necessary repairs can be made in time.

engineering What Should Be Done When a Stone Has Fallen Out?

A piece of jewelry that has lost a stone should first be examined by an expert jeweler or stone setter.

It is not right to place the responsibility directly on the manufacturer, the seller or the user without investigating why the stone fell out. The source of the problem may be a manufacturing defect, a material flaw, the conditions of use or wear over time. This distinction must be made through technical examination.

recommend Our Advice to Consumers

check_circle Protect your stone-set jewelry from hard knocks.
check_circle When you notice a stone loosening in its setting, have it checked by an expert before you continue wearing it.
check_circle Do not neglect the periodic care and inspection of your jewelry, especially pieces containing gemstones.

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Remember (Academy Principle):

The quality of a piece of jewelry is assessed not only by the karat of the gold used, but also by its design, production technique, setting workmanship and suitability for its intended use. To determine the real cause of a lost stone, one must proceed by technical examination, not assumptions.

— KSD Jewelry Academy

Chemistry & Surface Care

science Lesson Module 10

LESSON 10 — DOES GOLD TARNISH OR CHANGE COLOR?

verified KSD Academy Content

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Gold is highly resistant to chemical effects; pure gold does not oxidize or tarnish under normal conditions.

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However, because of the other metals in 22, 18, 14 and 8 karat alloys, discoloration, dulling or surface tarnish may appear over time.

bubble_chart Why Does Gold Jewelry Change Color? (5 Main Factors)

Metals in the Alloy

Copper, silver and other metals reacting chemically with sulfur in the air and with environmental factors.

Perspiration and Skin Characteristics

The acid/salt content of perspiration, the chemical characteristics of the skin and the constant contact of the piece with the skin can cause surface interaction.

Cosmetics & Cleaning Products

Perfume, cream, detergent and especially chlorine bleach can cause dulling and damage in gold alloys.

Plating and Surface Treatments

The rhodium plating on white gold wearing away through friction over time can reveal the slightly yellowish tone underneath.

Conditions of Use

Constant mechanical friction, hard knocks or unsuitable chemical environments can impair the surface shine and color of the piece.

help Does Tarnishing Mean It Is Fake?

No. Tarnishing alone does not show that a piece of gold jewelry is counterfeit or low-karat. Surface changes can occur in genuine gold alloys too. A definite determination is made by expert examination and analysis.

sanitizer How Should Tarnished Jewelry Be Cleaned?

Not every piece of jewelry is cleaned by the same method. Delicate stones such as pearl, emerald and opal, as well as platings, can be permanently damaged by the wrong chemicals. Unknown substances should be avoided and professional jeweler support should be sought.

lightbulb Our Advice to Consumers

Protect your jewelry from chemicals. Take your jewelry off when cleaning the house or in the pool. If a color change occurs, seek expert examination before concluding that it is fake.

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Remember (Academy Principle):

The karat of gold shows the proportion of pure gold it contains. Its color and surface appearance, however, may vary depending on its alloy, production technique, plating and conditions of use. The authenticity and karat of a piece of jewelry cannot be determined by looking at its color alone.

— KSD Jewelry Academy

Gemology 4C Certificate

verified Lesson Module 11

LESSON 11 — WHAT DOES A DIAMOND CERTIFICATE GUARANTEE?

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Diamond certificates are laboratory reports in which impartial experts assess the gemological characteristics of a stone.

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These reports document the physical characteristics of the stone; however, they do not guarantee its selling price, future value or investment return.

diamond The 4 Core Grading Criteria for Diamonds (4Cs)

Carat Carat

This is the weight of the diamond. 1 carat corresponds to exactly 0.20 gram.

Color Color

This is the degree of the stone’s colorlessness (from D to Z). Colorless stones are the rarest.

Clarity Clarity

This is the microscopic examination of the natural crystal marks inside and on the surface of the stone.

Cut Cut

These are the geometric proportions the cutter gives the stone; they directly determine the diamond’s brilliance and fire.

menu_book Key Facts to Know About Certificates

lab_research 1. What Is a Certificate?

It is issued by independent gemological laboratories such as GIA, IGI and HRD Antwerp. Important: A seller’s warranty card and an independent laboratory report are not the same thing.

find_in_page 2. Is a Certificate Enough on Its Own?

The report states whether the stone is natural or synthetic; but the document being genuine does not by itself prove that the stone in your hand belongs to that document. Physical matching is essential.

qr_code 3. Certificate No. & Girdle Laser Inscription

The laboratory report number can be checked online. Even if a number is laser-inscribed on the stone’s girdle, definite verification must be provided by expert inspection.

inventory_2 4. Is It Mandatory for Every Diamond?

Individual certificates may not be issued for small stones. Being uncertified does not show that a stone is fake; for high-value stones, however, a certificate provides assurance.

payments 5. Is It a Value & Price Guarantee?

No. A certificate is not a price or buy-back guarantee. Two diamonds with the same 4C characteristics may be sold at different prices because of workmanship and the market.

biotech 6. Natural vs Laboratory-Grown

Both are diamond in terms of crystal structure. However, their geological formation and market values differ; this distinction must be clearly stated in the report and at the point of sale.

recommend Diamond Buying Guide for Consumers

check_circle Pay attention not only to the existence of a certificate, but to which independent body issued the document.

check_circle Verify the report number on the official website of the relevant laboratory and confirm that it matches the stone.

check_circle Be sure to find out whether the product you are buying is a natural or a laboratory-grown diamond.

check_circle Ask for clear, written information about the product’s invoice, the terms of sale and any buy-back commitments.

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Remember (Academy Principle):

A certificate documents a diamond’s characteristics; it does not guarantee its price, future value or investment return. The foundation of trustworthy jewelry trade is correct documentation and fully informing the consumer.

— KSD Jewelry Academy

Hallmark & Fineness Analysis

approval_delegation Lesson Module 12

LESSON 12 — IS THE KARAT HALLMARK ON JEWELRY RELIABLE?

verified KSD Academy Content

Gold jewelry often bears numbers such as 916, 750, 585 and 333; these numbers express the declared proportion of pure gold.

warning

However, there is an important fact: The presence of a karat hallmark on a piece of jewelry does not by itself prove that the product is of the stated karat.

table_chart Common Karats, Fineness and Purity Ratios

24 Karat

999

99.9% Pure

22 Karat

916

~ 91.67% Pure

18 Karat

750

75.0% Pure

14 Karat

585

~ 58.5% Pure

8 Karat

333

~ 33.3% Pure

biotech How Is the Karat of Gold Checked? (3 Main Methods)

filter_vintage Touchstone Method

This is the traditional jewelers’ method. Approximate information is obtained through a comparison made with the help of chemical solutions; however, it does not give a definite and clear result for every product.

radar XRF Analyzers

This is X-ray fluorescence technology. Important limitation: It mainly reads the layer close to the surface. On its own it can be misleading for thickly plated products or those with a different internal structure.

science Cupellation (Fire Assay)

This is the most accurate analysis method, carried out in a laboratory with proper sampling. It establishes gold purity to international standards; it requires expertise and equipment.

report Can a Karat Hallmark Be Fake?

Yes. A misleading hallmark can be stamped on a product that is not actually of the stated karat, or the outside may be gold while the inside contains a different metal. The hallmark alone should not be relied upon.

help_outline Is Gold Without a Hallmark Fake?

No. On older pieces, worn jewelry or special handcrafted items, the hallmark can become illegible over time. The absence of a hallmark does not show that a piece is fake; an analysis should be carried out.

shield The Jeweler’s Responsibility

A jeweler is obliged to know the technical features of the product offered for sale and to inform the consumer accurately. They should rely not only on price, but on scientific testing.

recommend Our Advice to Consumers When Buying Gold Jewelry

check_circle When buying gold jewelry, find out the product’s karat, weight and features.

check_circle Always get your invoice and keep it.

check_circle In case of doubt, seek expert examination.

check_circle When the true karat of a product needs to be determined, ask for it to be checked using appropriate analysis methods.

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Remember (Academy Principle):

A karat hallmark is a declaration; technical analysis is a method for assessing the accuracy of that declaration. The limits of any analysis method must not be overlooked. Trustworthy jewelry trade is built on correct production, accurate information and, where necessary, checks carried out by scientific methods.

— KSD Jewelry Academy

Mechanical Resistance Strength

handyman Lesson Module 13

LESSON 13 — WHY DOES GOLD JEWELRY BREAK OR DENT?

verified KSD Academy Content

construction

The durability of gold jewelry does not depend on its karat alone; design, production technique, wall thickness, alloy and conditions of use are directly decisive.

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For this reason, a piece of jewelry breaking or denting does not always mean that it is low-karat or has a manufacturing defect.

link_off Why Does Gold Jewelry Break?

Manufacturing Defects: Micro-voids from casting, faulty welds or weak solder joints.
Design Features: Very thin chains, delicate clasps and narrow-section parts.
Impacts and Strain: Snagging, pulling or sudden tensile forces.
Metal Fatigue: Repeated bending opening micro-cracks at moving points.
Previous Repairs: Non-standard welding/soldering work creating weak points.

compress Why Does Gold Jewelry Dent?

Plastic Deformation: The metal permanently changing shape under applied pressure.
Hollow & Thin-Walled: The sensitivity to pressure of voluminous models with thin walls.
Everyday Wear Pressure: Bangles or rings getting crushed in a door, against objects or under weight.
The Quality Misconception: Denting alone does not show that a product is low-karat or of poor quality.

check_box_outline_blank Is Hollow Jewelry Fragile?

It offers a voluminous look at low weight. When produced correctly it is fit for its intended use; however, it is more sensitive to impact and pressure than solid jewelry. Its structure must be explained honestly to the consumer.

compare Why Different Durability at the Same Karat?

Two 14 karat pieces may differ in alloy composition, production method (casting/pressing), wall thickness, heat-treatment history and solder quality. Karat alone does not determine strength.

gavel Is Damaged Jewelry Defective?

Not every instance of damage is a manufacturing defect, nor can it automatically be considered user error. No final judgment should be made without a technical examination; consumer rights are reserved in cases of manufacturing defects.

recommend Guide to Using and Choosing Gold Jewelry for Consumers

check_circle When buying, find out not only the karat and weight, but also whether the product is hollow or solid and how it should be used.

check_circle Protect thin chains, delicate links and hollow jewelry from excessive mechanical force and impacts.

check_circle When you notice loosening, cracks or deformation in your jewelry, stop wearing it and have it checked by an expert.

check_circle When damage occurs, make sure an expert impartially assesses why the product was damaged.

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Remember (Academy Principle):

The karat of gold shows its purity; its durability is determined jointly by its alloy, production technique, design and conditions of use. To assess a broken or dented piece of jewelry correctly, one must look not only at its appearance but at the real cause of the damage. Trustworthy jewelry trade requires not only selling the product, but also explaining its features and conditions of use accurately.

— KSD Jewelry Academy

Online E-Commerce Trust

shopping_cart Lesson Module 14

LESSON 14 — WHAT SHOULD YOU WATCH OUT FOR WHEN BUYING GOLD ONLINE?

verified KSD Academy Content

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Buying gold and jewelry online offers consumers comparison and convenience; however, it requires extra care with high-value products.

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Safe shopping is founded on the right seller, transparent product information and corporate trading standards.

checklist_rtl 9 Golden Rules for Buying Gold Online

domain 1. The Seller’s Reliability

The trade name, full address and operating licenses should be researched. A stylish-looking site or a high follower count is not proof of trustworthiness on its own.

scale 2. Clarity of Karat and Weight

Karat, fineness, net weight in grams, stone characteristics and hollow/solid structure must be stated in writing. Even at equal weight, 14K and 22K contain different amounts of pure gold.

price_change 3. Unusually Low Prices

Prices far below the market should be approached with caution. A price difference may stem from workmanship; so the exact product specifications should be compared like for like.

photo_camera 4. Do Not Be Misled by Photographs

Light and angle can make a product’s size look different. Look not at the photograph, but at the written dimensions, the weight and whether the stones used are natural or synthetic.

receipt_long 5. The Importance of the Invoice

The invoice should contain all the identifying details of the product. Invoices and certificates are the consumer’s most fundamental legal basis in any dispute.

assignment_return 6. Return and Withdrawal Terms

There may be exceptions to the right of withdrawal for exchange-priced gold and personalized products. However, consumer rights always apply to defective goods.

local_shipping 7. Secure Delivery Check

Products should be sent by insured courier, and on delivery the parcel should be checked for damage and for conformity with the order. If anything is missing, a written report should be drawn up.

share 8. Social Media Sales

Transferring money directly to personal accounts is risky. Businesses that can issue a corporate invoice and have a verifiable commercial infrastructure should be preferred.

fact_check 9. Karat Confirmation and Analysis

The hallmark on a product is not conclusive proof on its own. In case of doubt, a check may be requested from an expert jeweler or authorized assay institutions.

recommend Online Shopping Advice for Consumers

check_circle Do not make hasty decisions when buying gold and jewelry online.

check_circle Research the seller’s commercial identity, find out the technical specifications and keep your invoice and documents.

check_circle Do not decide by relying solely on the discount rate or on flashy advertising claims.

check_circle Know in advance the features of the product you are buying and your legal rights after the sale.

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Remember (Academy Principle):

Safe gold shopping is not just about finding a good price; it means buying a product whose features are clearly stated, from the right seller, under reliable conditions. In jewelry trade conducted online too, honesty, transparency and accurately informing the consumer must be the guiding principles.

— KSD Jewelry Academy

scale Weight & Quality

school Lesson Module 15

Does the Weight of a Piece of Jewelry Alone Indicate Its Quality?

KSD Jewelry Academy — Where Knowledge, Mastery and Trust Meet

Core Principle

One of the features consumers pay most attention to when buying gold jewelry is the weight of the product. However, a piece of jewelry being heavy does not necessarily mean it is of higher quality.

In jewelry, the value and quality of a product are assessed not by its weight alone, but together with the karat of the gold, the alloy used, the design, the production technique, the workmanship and the product’s suitability for its intended use.

balance

Grams show weight; they do not determine quality on their own.

calculate Same Weight, Different Pure Gold Value

Let us take two different 10-gram bangles, without stones and made entirely of gold alloy:

10 Gram 22 Karat Bangle (91.67%)

Amount of pure gold it contains:

~9.17 grams

Pure Au

10 Gram 14 Karat Bangle (58.50%)

Amount of pure gold it contains:

~5.83 grams

Pure Au

Conclusion: Even if their weights are exactly the same, the pure metal the products contain and their market value are entirely different.

architecture Hollow (Electroformed) vs. Solid Jewelry Dynamics

Hollow production technology makes it possible to create far more voluminous and striking designs with a lower weight:

view_in_ar Hollow Jewelry

It is light and gives a full look on a modest budget. However, it is sensitive to impact and pressure, and the risk of denting is high.

shield Solid Jewelry

Its metal density is high and it feels heavy. Its resistance to bending and denting is considerably greater.

Rule: Hollow jewelry does not mean poor quality. It must be produced in a way that suits its purpose, and its structure must be explained accurately to the consumer.

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7 Key Facts to Know About Weight and Quality

straighten 1. What Does the Gram Weight Express?

The gram is the measure of a piece of jewelry’s physical mass. However, the total weight on the scale and the amount of pure gold the product contains are never the same thing.

verified 2. Is Heavier Jewelry Higher Quality?

Not always. A heavy piece may have casting voids or faulty welds; by contrast, a light piece with quality workmanship can be far sturdier.

sell 3. Price Differences at the Same Weight

Weight reflects the amount of metal, while workmanship reflects the labor invested in the product. The price of a mass-produced item differs from that of a custom design requiring intensive hand labor.

layers 4. The Difference Between Hollow and Solid Jewelry

Hollow techniques offer large volume with low metal weight. What matters is that the consumer buys knowing the internal structure of the piece and its sensitivity to impact.

diamond 5. Scale Weight in Stone-Set Jewelry

The weight of diamonds, emeralds and other stones is included on the scale. Especially in stone-set products, the total weight and the weight of the gold alloy must be clearly separated.

lock_reset 6. Durability of Thin and Light Jewelry

Being light does not show poor quality. However, thin clasps, delicate chains and low wall thickness call for more careful use against strain.

badge 7. The Jeweler’s Duty to Inform the Consumer

A jeweler should transparently explain to the consumer not only the price, but also the product’s karat, net gold weight, the alloy used, its production features and its conditions of use. A piece of jewelry cannot be judged for quality simply by calling it “heavy” or “light”.

recommend Gold Jewelry Shopping Advice for Consumers

check_circle When buying gold jewelry, do not decide by looking at its weight alone.

check_circle Evaluate the product’s karat, design, production features and intended use together.

check_circle For stone-set products, be sure to find out the difference between the net gold weight and the total scale weight.

check_circle For hollow or delicately built jewelry, ask for information about impact resistance and proper conditions of use.

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Remember (Academy Principle):

The gram weight of a piece of jewelry shows its weight, and its karat shows its proportion of pure gold. Its quality, however, is assessed together with its material properties, design, production technique and workmanship. Not every heavy piece is of higher quality, just as not every light piece is of poor quality. An informed consumer pays attention not only to the weight, but to all the features of the product.

— KSD Jewelry Academy

diamond Diamond

school Lesson Module 16

What Are the Differences Between Natural and Synthetic Diamonds?

KSD Jewelry Academy — Where Knowledge, Mastery and Trust Meet

Gemology & Transparency

A brilliant-cut diamond is a precious gemstone obtained by cutting and polishing diamond with specific techniques. Today, alongside natural diamonds, synthetic diamonds produced with advanced technologies are also used in the jewelry industry.

Although these two products have similar chemical, physical and optical properties, they are sharply distinguished from each other in terms of their origins and their commercial valuation.

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A natural diamond is a product of nature, while a synthetic diamond is a product of technology. Both have the diamond structure; however, their origins and commercial values are completely different.

public Natural Diamond Geological

Formation: Forms under high pressure and heat over millions of years, hundreds of kilometers below the Earth’s surface.

Composition: Pure crystalline carbon mineral (100% natural).

Characteristic: Its reserves in nature are limited; it is a rare geological heritage.

Market: High commercial and collector value; a traditional store of wealth.

science Synthetic Diamond Laboratory

Formation: Produced within weeks in industrial facilities and laboratories.

Method: HPHT (High Pressure & High Temperature) and CVD (Chemical Vapor Deposition).

Composition: Has essentially the same chemical and crystal structure as natural diamond.

Market: Priced noticeably more accessibly than natural diamonds.

warning Imitation Stones (Zirconia / Moissanite) Simulant

Not Diamond: Cubic zirconia and moissanite are not chemically the diamond mineral.

Difference: Their optical refraction, hardness and specific gravity are entirely different from diamond.

Important Rule: Synthetic diamond must never be confused with imitation diamond; synthetic diamond is not an imitation.

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8 Key Topics on Natural and Synthetic Diamonds

public 1. Natural Diamond

This is natural diamond, formed by geological processes deep within the Earth, that has been cut and polished. It is a crystalline carbon mineral.

precision_manufacturing 2. Synthetic Diamond

This is synthetic diamond, produced in controlled facilities by the HPHT and CVD methods, that has been cut and polished. It has the same chemical structure as natural diamond.

difference 3. How It Differs from Imitations

Synthetic diamond has the crystal properties of diamond. Imitation (simulant) materials such as cubic zirconia and moissanite, however, are not diamond.

biotech 4. How to Tell Them Apart

They cannot be told apart with the naked eye or with simple testers. Reliable identification requires advanced gemological spectroscopy and a laboratory.

payments 5. Market Prices

Synthetic diamonds are priced noticeably lower than natural stones. No diamond carries a guarantee of future returns.

verified 6. The Importance of the Certificate

A reliable gemological laboratory report clearly states the origin of the stone (natural or synthetic). The match between report and stone should be checked.

gavel 7. CIBJO Terminology

In September 2026, the World Jewellery Confederation (CIBJO) recommended that man-made stones be described with the term “synthetic” in international communication.

badge 8. The Jeweler’s Responsibility

A jeweler must know the true origin of the stone they sell and explain it to the consumer. Presenting a synthetic stone as natural is unquestionably misleading.

recommend Diamond Buying Advice for Consumers

check_circle When buying a diamond, find out clearly whether the stone is natural or synthetic.

check_circle Examine its gemological report, if there is one, and have the information in the report checked against the product.

check_circle Do not judge the origin of a stone by its appearance, brilliance or price alone.

check_circle Make sure the natural/synthetic nature of the stone is stated in writing on the invoice or warranty document.

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Remember (Academy Principle):

A natural diamond is a product of nature, while a synthetic diamond is a product of technology. Both can have the essential properties of diamond. However, their origins and commercial values differ. What matters is that the consumer knows what they are buying. Trustworthy jewelry trade begins with accurate information.

— KSD Jewelry Academy

You Have Completed All Lessons — Take the Proficiency Test quiz

The 8 Most Frequently Asked Questions in Jewelry

Click on the question whose detailed explanation you would like to read

touch_app 8 Core Guide Topics

No, gold and jewelry are not the same thing.

Gold: A precious element and metal found in nature, with a purity of 24 karat (995 or 999.9 fineness). It is a store of value and a raw material.

Jewelry: Because pure gold is soft by nature, jewelry is the finished product made ready for use by hardening gold through alloying with metals such as silver and copper (22, 18, 14 or 8 karat) and working it through stone setting, welding, pressing or the art of handcraft. In addition to the metal value, the price of jewelry includes the cost of design and workmanship.

The main reason two different products of the same karat and the same weight have different prices is workmanship cost and production technology.

Mass-Produced / Pressed Jewelry: Because it is stamped in high volumes on automated machines, the workmanship cost per gram is low.
Custom Design / Handmade & Filigree: In jewelry meticulously woven, enameled or micro-set over days by master hands, the cost of artistry and time can exceed the metal value.
In addition, the clasp mechanisms used, the quality of the polish and the brand warranty are also factors that affect the price.

Karat: The traditional unit of measure showing how many parts out of 24 of a gold alloy are pure gold.

24 Karat (995/999.9 Fineness)

99.5% - 99.9% Fine Gold. The standard for bullion and investment gold.

22 Karat (916 Fineness)

91.6% Pure Gold. Used in twisted bangles and bullion-trade products.

18 Karat (750 Fineness)

75.0% Pure Gold. The world’s main standard for diamond jewelry.

14 Karat (585 Fineness)

58.5% Pure Gold. Türkiye’s most common karat for durable, modern jewelry.

8 Karat (333 Fineness)

33.3% Pure Gold. Preferred in the affordably priced jewelry segment.

The numbers stamped on the clasp, ring or inner surface of jewelry are the Millesimal Fineness (Parts-per-Thousand Purity) Hallmark.

These numbers show the manufacturer’s declaration of how many grams of pure gold there are in 1000 grams of alloy. However, a karat hallmark is not conclusive proof on its own; in case of doubt, purity should be verified with the touchstone, an XRF spectrometer or authorized laboratory analyses:

916: Shows that the product is 22 karat (91.60% pure gold).
750: Shows that the product is 18 karat (75.00% pure gold).
585: Shows that the product is 14 karat (58.50% pure gold).
333: Shows that the product is 8 karat (33.30% pure gold).

On reliable products it is recommended that the manufacturer’s registered mark (maker’s mark) appear next to the karat hallmark; this mark makes it easier to identify who is responsible for the product and where it originates.

Absolutely not. Karat represents only the chemical purity ratio of the alloy; it does not on its own express the overall quality and durability of the piece.

Two pieces may both be 14 karat (585), but:

Casting Quality: Poorly cast gold has microscopic pores (porosity), which leads to the product breaking.
Setting & Stone Security: The skill with which stones are secured by prongs prevents them from falling out.
Clasp & Hinge Mechanisms: A quality clasp prevents the piece from being lost.

No, color is not a direct indicator of karat. Yellow gold, white gold and rose (red/pink) gold can be produced in exactly the same karat (for example, all 14 karat - 585 fineness).

The difference in color depends on the type of auxiliary metals added to pure gold:

Yellow Gold: With a balanced addition of silver and copper,
White Gold: Obtained by adding silver, nickel or palladium, with rhodium plating applied to the surface for shine.
Rose (Red) Gold: The pink/red tone is achieved by increasing the proportion of copper in the alloy.

In solid, one-piece products such as plain openwork bangles and fine gold bars, the weight on the scale belongs directly to the gold alloy.

However, in chains, necklaces, and jewelry with clasps or with stones/enamel, the scale may not always show the net gold weight:

Clasp Mechanisms & Springs: The clip/clasp parts of chains and necklaces may contain steel springs or internal parts made of different metals to provide flexibility, as well as joining solder.
Stone-Set and Enameled Jewelry: In products containing zircon, diamonds, pearls or enamel, the scale shows the total gross weight; it is essential that the stone tare be deducted at the time of sale or that the net gold weight be clearly stated on the invoice.
Consumers should know that when selling back, the non-gold parts (steel springs, excess solder, stones) will not be counted and the transaction will be based solely on the net gold weight.

Jewelers and counter staff are obliged to know every piece they place in their showcase at an expert level.

They must know the product’s exact fineness, its tare and its production technology.
They must declare to the customer, clearly and with documentation, whether the stone on it is natural, synthetic or laboratory-grown (CVD/HPHT).
Protecting the consumer, matching the right product with the right price and offering care advice are fundamental requirements of the jewelry profession and the Ahilik tradition.

psychology KSD KNOWLEDGE TEST

Test Your Gold & Jewelry Level!

Answer the questions below to test your knowledge of gold, karat and jewelry, and earn your badge instantly.

A to Z Reference Source

Glossary of Jewelry Terms

The goldsmith’s lexicon, from the historic language of the trade to modern technical terms

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Academy Paths Tailored to Your Needs

Merchant & Staff Academy

Counterfeit & Low-Karat Gold Detection

Natural vs Lab-Grown (CVD/HPHT) Diamonds

MASAK, Tax & Legal Compliance

Apprenticeship, Journeyman & Master Certification

Consumer & Investor Guide

Gold Hallmarks & Millesimal Fineness

Jewelry Craftsmanship vs Investment Gold

KSD Member Directory & Verification

Invoices, Certificates & Consumer Rights

Gold and Jewelry Knowledge Library

LESSON 1 — WHAT IS GOLD?

LESSON 2 — WHAT IS KARAT IN GOLD?

format_list_bulleted Standard Gold Karats and Purity Ratios

LESSON 3 — WHAT IS MILLESIMAL FINENESS?

table_chart Common Karat and Fineness Equivalents

LESSON 4 — ARE GOLD AND JEWELRY THE SAME THING?

Factors Affecting Price

Practical Example

LESSON 5 — WHY IS JEWELRY OF THE SAME KARAT SOLD AT DIFFERENT PRICES?

format_list_bulleted Main Reasons for Price Differences

Design and Model Features

Handcraft or Machine Production

Production Techniques

Gemstones Used

Workmanship and Quality Control Costs

Commercial Expenses & Pricing Policy

LESSON 6 — DOES THE COLOR OF GOLD INDICATE ITS KARAT?

format_paint The Most Common Gold Colors in Jewelry and Their Alloy Properties

Yellow Gold

White Gold

Rose (Red) Gold

LESSON 7 — IS THE ENTIRE WEIGHT OF JEWELRY ON THE SCALE GOLD?

extension Main Materials and Parts That May Be Found in Jewelry

Gemstones

Springs & Wires

Different Metals

Auxiliary Parts

LESSON 8 — HOW WELL SHOULD A JEWELER KNOW THE PRODUCT THEY SELL?

checklist 7 Core Topics a Jeweler Must Master

The Product’s Karat and Gold Content

Properties of the Alloy Used

Production Method

Workmanship Features

Gemstones in the Product

Use and Care Conditions

Warranty and After-Sales Services

LESSON 9 — WHY DO STONES FALL OUT OF JEWELRY?

troubleshoot 5 Main Factors That Can Cause a Stone to Fall Out

Production and Setting Errors

Impacts and Snagging

Wear Over Time

Conditions of Use

Lack of Care and Inspection

LESSON 10 — DOES GOLD TARNISH OR CHANGE COLOR?

bubble_chart Why Does Gold Jewelry Change Color? (5 Main Factors)

Metals in the Alloy

Perspiration and Skin Characteristics

Cosmetics & Cleaning Products

Plating and Surface Treatments

Conditions of Use

LESSON 11 — WHAT DOES A DIAMOND CERTIFICATE GUARANTEE?

diamond The 4 Core Grading Criteria for Diamonds (4Cs)

menu_book Key Facts to Know About Certificates

LESSON 12 — IS THE KARAT HALLMARK ON JEWELRY RELIABLE?

table_chart Common Karats, Fineness and Purity Ratios

biotech How Is the Karat of Gold Checked? (3 Main Methods)

LESSON 13 — WHY DOES GOLD JEWELRY BREAK OR DENT?

LESSON 14 — WHAT SHOULD YOU WATCH OUT FOR WHEN BUYING GOLD ONLINE?

checklist_rtl 9 Golden Rules for Buying Gold Online

Does the Weight of a Piece of Jewelry Alone Indicate Its Quality?

7 Key Facts to Know About Weight and Quality

What Are the Differences Between Natural and Synthetic Diamonds?

8 Key Topics on Natural and Synthetic Diamonds

The 8 Most Frequently Asked Questions in Jewelry

Test Your Gold & Jewelry Level!

Are You Ready?

Glossary of Jewelry Terms

Visual Training Lessons