Coloured Gemstones

Would you like to know everything about the world of coloured stones and know their value on the market?

In a relaxed atmosphere guided by passionate experts, you will discover the fascinating world of coloured stones, going through their history, discovering the extraction methods, the producing countries and mining, their sizes, the different gradation systems for coloured gemstones.

You will used different worldwide grading systems (Gemewizard, World of Color, GIA Gem Set and Gemdialogue). Also, you will be able to understand what is the value of a gemstone compared to other similar gemstones and know its monetary value.

Thanks to the EGM teachers and the courses developed by the WGF (World Gem Foundation), you will discuss their treatments as well as synthetic gems.

Topics Covered Include:
– Physical and optical properties,
– Geology,
– localities and mining,
– Gem cutting,
– Treatments and enhancements,
– Synthesis,
– Gem identification,
– Worlwide grading systems,
– Value of gemstones

Gemstones covered in this course include corundum (rubies and sapphires), beryl (emeralds, aquamarines and other beryls), chrysoberyl (alexandrite and other chrysoberyl), spinel, zircon, topaz, tourmaline, peridot, quartz, garnet, tanzanite, lapis lazuli, turquoise, spodumene (kunzite and hiddenite), feldspars, iolite, andalusite, diopside, apatite, and organic gems (pearls, coral, jet, ivory, and amber).

Who should take this course

This course is aimed at both the curious who wish to know more about the world of gemstones, students wishing to become professional gemmologists, and gemmologists wishing to upgrade or deepen their knowledge.

Format and Update Course

This course is available:

  • Online, in digital version
  • Online, in printed version
  • On-site at the EGM (in French)

As with all WGF courses, you benefit from special advantages:

  • Regardless of the formula chosen, the course is always given in digital version.
  • The photos of gems available on this course have been rewarded for their high quality.
  • Your access to the courses in digital version is acquired for life.
  • The WGF makes an update every two years. Each student receives the digital version of this update for life and free of charge, and thus remains up to date with the latest developments in the world of gemmology
  • The online courses are accompanied by individual tutoring.


It is strongly advised to have a good base of knowledge in terms of gemmology in order to follow this course and to benefit from it.

If you wish to obtain the Career Gemmologist or Coloured Gemstones Professional diplomas, it is strongly advised to respect the organisation of the courses as indicated in the right-hand column.

Language and schedules

In what concerning the online course, it’s presented in English.

It is also available in French. If you want to register in this language, please go to the French page of the course: Pierres de couleurs.

If you wish to take this course in Spanish (online version only), please contact us at

If you choose to take this course online (digital or printed version), you can start and finish this course whenever you want. 4 hours of tutoring, which you schedule at your convenience, are offered to accompany you in your learning. If you wish, you can follow these tutoring hours on-site at the EGM (once you have selected your hours, please send us an email at

If you choose to take this course on-site at the EGM, classes are held on Mondays, Tuesdays, Thursdays and sometimes Fridays, from 9am to 12pm and from 1pm to 4pm, according to the announced schedule. At that moment, classes on-site are given only in French.


On-line course with digital version: $745 CDN + taxes (i.e. $856,56)

The 4 hours of tutoring are included.

Online course with printed version: $875 CDN + taxes (i.e. $1006.03)

The 4 hours of tutoring and shipping are included.

Classes on-site (in French): $2 080 CDN + taxes (i.e. $2 391,48)

How to register

Online (by clicking on the “I register” button on the right), by mail or by phone at 514 844-0024. Registration for courses in French has to be done on the French version of the page.

Once registered, you will receive your student access code for the digital version of the courses, even if you are taking the courses on-site.

If you choose the e-learning version, you will be able to request four hours of tutoring at your convenience. This tutoring is individual, and is provided by one of the EGM teachers. You can sign up for additional tutoring if you wish (fee extra).

Certificate program

The Coloured Gemstones course is sanctioned by exams after the fourth, tenth, sixteenth, twenty-fifth and thirtieth lesson. These are done online.

The results are available quickly. In case of failure, a second attempt is allocated, free of charge.

A certificate is issued.

This course is part of the Career Gemmologist and Coloured Gemstone Professional diploma programs.

You will find all the information you need about the WGF courses and the different procedures on the Gem Academy of Canada page.
You can also consult the Frequently Asked Questions (FAQs) on the WGF website.