The Diamond Course, developed by the WGF (World Gem Foundation), is dedicated exclusively to the world of diamonds.

By the end of this course, students will have a thorough understanding of the chemical nature of diamonds, how they are formed, graded (colourless and coloured), extracted, processed and cut, the unique properties that allow them to be separated from other colourless gems, and how they are graded.

The topics covered in this course are: physical properties, geology, localities, major mines, crystal system, chemical composition and classification, fancy colours, causes of colour, absorption spectra, inclusions, fluorescence, mining, gem identification, methods of synthesis, common treatments and improvements.

The diamond grading course is most comprehensive. Indeed, you will learn all about the 4 C’s of diamond (colour, clarity, cut and carat weight) and how they are measured and evaluated. We will also compare the different ‘cut’ criteria of the Gemological Institute of America (GIA), American Gem Society (AGS), Hoge Raad Diamond (HRD), International Gemological Institute (IGI), European Gemological Laboratory (EGL) and Accredited Gem Appraisers (AGA) and explain how the estimated weight of a ‘mounted’ stone is calculated.

Who should take this course

This course is aimed at diamond lovers with a solid knowledge of gemmology, students wishing to become gemmologists or diamond gemologists.

Professional gemmologists can also upgrade their knowledge thanks to the in-depth approach to diamond grading offered by this course.

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.


This course is intended for both beginners and those who already have a solid knowledge of diamonds.

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

Language and schedules

The online course (digital and printed versions) is given in English.

It is also available in French. To register, please go to the French page of the course: Diamants.

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

If you choose to take this course online (digital or print version), you can start and finish this course whenever you want. 2 hours of tutoring, which you can schedule at your convenience, are offered to accompany you in your learning. If you wish, you can follow these hours of tutoring on-site at the EGM (once you have selected your hours, please send us an email at

If you choose to follow this course in person at 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: $340 CDN + taxes (i.e. $390.92)

The 2 hours of tutoring are included.

Online course with printed version: $410 CDN + taxes (i.e. $471,40)

The 2 hours of tutoring and shipping are included.

Classes on-site (in French): $800 CDN + taxes (i.e. $919,80)

How to register

Online (by clicking on the “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 two 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

This course includes one online test after lesson eight.

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

A certificate is issued.

This course is a prerequisite leading to the WGF international diplomas: Career Gemmologist and Diamond professional. If you wish to follow these courses, the Diamond course is included and you don’t have to pay again: you receive a credit.

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.