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.

For more info, download the Diamonds Program brochure:

Is this program for me?

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

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

How does it work?

This course is available on-site, and through distance education, with two options:

  • 100% digital
  • Printed material with access to the digital content.

Whatever formula you choose, you will be given an access code that will allow you to access the digital version of the course for life, updated every two years, free of charge.

2 hours of individual tutoring, given by an EGM instructor, are also included in this course. You schedule those tutoring sessions, with online or on-site options, depending on your availability and progress.

In order to help students who choose distance education for their gemmology studies, we offer several gemmology kits ; some that include the instruments required to study gemmology and become a professional; a gem set, made of 40 gemstones carefully selected for their educational value (450 $ taxes included), to help you identify gemstones, treatments and lab-grown gems from the comfort of your home. All gems are labelled and your EGM instructor will help you by explaining what to look for in those specific gems, how to identify them, how to name and draw what you saw and how to handle them with tweezers and other instruments.

Language and schedules

The online course is in English, from the educational material to the online test, to your tutoring session.

It is also available in French. If you want to register in this language, please go to: Diamants.

The classes are held from Monday to Friday, from 9AM to 5PM.

If you choose now the distance education program, register now and learn gemmology at your own pace.

Tuition fees

Online course with digital version: 340 CAD before tax (i.e. 390.92)

The 2 hours of tutoring are included.

Online course with printed version: 425 CAD before tax (i.e. 488.64)

The 2 hours of tutoring and shipping are included.

On-site course: 800 CAD before tax (i.e. 919.80)

How to register

Register online, by mail, by phone at 514 844-0024, or at the EGM (please book an appointment). Registration for courses in French can be done on the French version of the page.

Once registered, you will receive your student access code for the digital version of the course.

Please note that since WGF theory courses are available for a lifetime, the online course fee cannot be refunded once the access codes have been communicated to the student via the internet and the printed documents have been sent. The refund process may be applied to the classroom portion of the fee.

Graduation policy

The Diamonds course includes one online test.

The results are received instantly after the test is completed. To pass the Gem Identification course and receive your letter of completion, you must pass the test with a 70% score or higher. If you did not reach 70% score, a second attempt will be granted, free of charge.

This course is part of the Career Gemmologist and Diamond professional diplomas programs. For more information, please download the Diamonds Program brochure.