Gem Training International

Coloured Diamond 
Grading Course

Course Objective

The Coloured Diamonds Grading online course is designed to provide practical knowledge and valuable information, privy only to a relatively small number of experienced players in the industry, thus facilitating and accelerating an individual’s integration process into the colored diamond business world. Diamond traders, diamond hobbyists, gemology graduates, trade professionals with basic gemological knowledge, career gemologists, appraisers or valuers, and others who are or intend to be part of the colored diamond business, are all suitable for this course. Graduates of the course will understand and be proficient at defining, grading, evaluating and pricing coloured diamonds. Fee is R15500. Currency converter?


This course will introduce you to the fascinating and vivid world of fancy colored diamonds and explain how color (and its gentle variations), geographical origin, treatments and other attributes define their quality and determine their value. The course covers fancy colored diamonds of the following colors: Yellow, Brown, Pink, Red, Orange, Blue, Green, Chameleon, Purple, Violet, Grey, Black, White, Icy and color-treated diamonds.

Using the significant database of real diamond online images and, with the assistance of an actual diamond-like sample kit, students will be able to practice sorting and pricing based on up-to-date prices, at a level that in real life would take them years to achieve. It is a highly recommended course for any gemologist with a relation to the diamond business, providing you with the needed knowledge and skills.

This course will also acquaint you with some of the most advanced and revolutionary digital color communication online tools for defining, grading and pricing of colored diamonds, powered by Gemewizard®.

As a student of the course, you shall be assigned a class and a teacher, an experienced instructor who will accompany you for the entire duration of the course, answer your queries, check your assignments and tests and monitor your progress. Additionally, you will also be able to communicate with other students of your class to share insights and discuss issues.

Students will learn:


Colored diamond definition borders for the all available colors, including different perceptions and preferences of each market around the world.


The potential effect of diamond attributes, such as color, secondary color moderators, clarity, and cut, on the colored diamond’s price in the world trade.


The evaluation techniques commonly used by the diamond trade.


The effect of other factors, such as enhancements, optical phenomena and size, on the grading and pricing of the diamond.


How to use the Gemewizard online tools for color communication, grading and pricing of diamonds.


How to grade colored diamonds against actual and digital master rulers.

Students will receive:


A fully illustrated Colored Diamonds Grading course notes.


Access to the online course materials, including hundreds of colored diamond images, sorted by quality.


Access to online exercises of quality sorting, fancy grading and price calculations.


A student gem kit comprising 25 CZ diamond-like samples, depicting important colors and grades of colored diamonds. (The kit remains with the student after the course and can be used as a color master ruler)


A 1-year free subscription to All Gemewizard products, including GemePrice™ – an online pricing system and pricelist for diamonds and gemstones.

Course Fee

This course mentored Johannesburg:

The fee is R17,000.00
excluding V.A.T.

For the theory

The fee is R5,700.00
plus V.A.T.

This course mentored Johannesburg:

The fee is R17,000.00
excluding V.A.T.

The course held in other centres:

The fee is
on request

*A discount for group training of more than 5 students may be negotiated.


After passing the theory and practical modules, with a minimum pass of 80% you will receive a certificate of completion.

Want to find
out more?

Please fill in the contact form with all your details and your requests or queries. And click on the “Submit Enquiry” button. Your request will be sent directly to us. Firstly, we will acknowledge receipt of your request and then respond fully to it within 24 hours. Should you prefer to talk to us, feel free to use the contact number.

Tel: +27 (0) 83 701 9830


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