Gemmology Basics

Learn about basic gemology, the 4Cs, evaluate different kinds of gems and diamonds, and ask the right questions

Last updated 2022-01-10 | 4.5

- Understand the rationale behind naming and identifying major gem species
- Learn the definition of each of the 4Cs of gemstones: Cut
- Colour
- Clarity
- and Carat weight
- Review how colour affects the value of gemstones and how to identify gems using this colour criteria

What you'll learn

Understand the rationale behind naming and identifying major gem species
Learn the definition of each of the 4Cs of gemstones: Cut
Colour
Clarity
and Carat weight
Review how colour affects the value of gemstones and how to identify gems using this colour criteria
Study how internal and external characteristics in clarity affect the values of different types of gemstones and how clarity applies to GIA Clarity Grading System
Make sense of how carat weight originates and its relation with price as a measurement
Understand the rationale behind cutting styles and shapes for different coloured gemstones and how it affects other factors in the value of gems
Apply 4Cs in Diamonds as a case study to determine how they are graded

* Requirements

* No

Description

Immerse in this insightful lesson on Gemmology Basics for amateurs by expert Tanja Sadow, Dean of the Jewellery Design and Management International School, the only educational institution in Singapore specializing in the jewellery arts.

Learn insider tips to know what questions to ask for your next gemstone or jewelry purchase. Or simply be more appreciative of the natural treasures bestowed by Mother Earth if you come across one. Whether you are a gemstone dealer, jewelry collector, or jewellery designer, you can benefit greatly from the indispensable knowledge learnt.

This learning covers the foundational 4Cs of gems and gemstones: Cut, Colour, Clarity and Carat Weight

The world of gems offers such an endless choice of colour and a variety of fascinating minerals that they can satisfy even the most difficult of people. Since the dawn of history, men have put their lives at risk in the search for the most beautiful, naturally created specimens on Earth. No one is able to resist the beauty of such treasured jewels.

Imagine you have the chance to be with Diamonds, Rubies and Sapphires in a mine in Sri Lanka. A sparkle from that jewel caught your eye when a miner holds it against the sun. Instantly you want to own those precious gemstones that dazzled before your eyes. Before you fantasize about yourself earning a huge fortune from reselling, do you know what questions to ask before your purchase? Are you aware of what indicators to look for in a quality gemstone? Perhaps you have changed your mind and ended up not buying. Do you know how to appreciate them better and make a wise decision in the future?

Who this course is for:

  • Absolute beginners who are new to Gemology
  • Professionals who want to refresh their knowledge of gemstones
  • Jewelry lovers who want to know more about gemstone

Course content

3 sections • 18 lectures

Introduction by Tanja Sadow Preview 00:42

What is a Gem? Preview 01:24

Naming Gemstones Preview 01:56

Identifying Gemstones Preview 02:03

What are the factors that affect the value of gemstones? Preview 01:11

The Importance of Colour to Value Preview 03:33

Evaluating Gem Colour: Hue Differences Preview 02:20

Evaluating Gem Colour: Tone Differences Preview 04:12

Evaluating Gem Colour: Saturation Preview 01:54

Evaluating Gem Colour: Distribution of Colour Preview 01:06

Colour Grading ‘Colourless’ Diamonds Preview 04:06

Clarity in Coloured Gems: Type 1, Type 2 and Type 3 Gems Preview 02:56

Observing Internal Characteristics Preview 02:13

The GIA Clarity Grading System Preview 08:30

CARAT Weight Preview 02:36

Cutting Diamonds and Coloured Gems Preview 03:05

The importance and the impact of Cut to Gem Value Preview 04:06

Thank you for participating! Preview 00:58