Advanced Gemmology

The Advanced Gemmology course, developed by the WGF (World Gem Foundation), is largely devoted to the imitations of gemstones, the different methods of manufacturing synthetic gems – as well as techniques to distinguish them from their natural counterparts – and the detection of the different treatments used to improve the appearance and/or value of gemstones.

Many topics are covered in this course: artificial gems and composites, methods used to manufacture synthetic gems including Verneuil, Czochralski, melting, hydrothermal, copper skull, zone fusion, horizontally oriented crystallization, HPHT, CVD, detonation, sublimation and modified Stöber, and the different characteristics to identify them. Treatments and techniques for improving gemstones will also be discussed, including heat treatment, surface and volume diffusion, lead glass fracture filling, filling of fractures with cobalt-doped lead glass (for sapphires), flux crack healing, methods of improving the purity of diamonds, HPHT treatment of diamonds, quench-crackling, surface modification, laser drilling, irradiation and scientific gem identification techniques.

For more info, download the Advanced Gemmology Program brochure:

Is this program for me?

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

You must have passed the Coloured Gemstones examinations.

Professional gemmologists can also upgrade their knowledge with the in-depth approach of this course in the field of synthetic gems and treatments.

How does it work?

This course is available 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.

4 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. To register, please go to: Gemmologie avancée.

Register now for the Advanced Gemmology distance education program and learn gemmology at your own pace.

Tuition fees

Online course with digital version: 610 CAD before taxes (i.e. 701.35)

The 4 hours of tutoring are included.

Online course with printed version: 685 CAD before taxes (i.e. 787.58)

The 4 hours of tutoring and shipping are included.

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 Advanced Gemmology course includes two online tests (one after the eleventh lesson and one after the twenty-second). These are done online.

The results are received instantly after the test is completed. To pass the Advanced Gemmology course and receive your letter of completion, you must pass each 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 diploma program. If you wish to pursue this program, the following course will be Gem Identification.