Opals and Jade

The Opals and Jade course, developed by the WGF (World Gem Foundation), is devoted exclusively, as its name suggests, to the study of jade and opal.

The origins of its name, its formation within the earth’s crust, the mistaken belief that it’s a purveyor of bad luck, the optical phenomenon that produces such a mesmerizing and tantalizing array of spectral colours and patterns, … opal is a “stone of mystery”!

On the other hand, jade is not only desired and valued for its beauty. Indeed, it has held a unique and venerable position in the cultural fabric of many great and storied civilizations. We can cite the Chinese empire, where it was once considered its most valuable commodity; the pre-Columbian civilizations of the Olmec, Maya, and Aztec of Central America (Mesoamerica), who valued it more than gold; the Maoris of New Zealand.

Topics covered in the course include their physical and optical properties, geological formation, crystal systems, chemical composition, varieties and classification, cause of colour, absorption spectra, common inclusions, fluorescence, mining, grading criteria, methods of synthesis, gem identification, common treatments and enhancements, cleaning and care instructions, and pricing.

Is this program for me?

In order to understand and appreciate this course, gemmological knowledge is required. Jewellers as well as lovers of opals and jade will be able to deepen their knowledge. This course is also aimed at students who wish to become gemologists.

How does it work?

This course is available online, with a digital version only.

When registering, you will benefit from exceptional benefits:

  • The photos of gems available on this course are 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 this update for life and free of charge, and thus remains up to date with the latest developments in the world of gemmology.

Language and schedules

The online course is in English.

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

Register now for the Opals and Jade distance education program and learn gemmology at your own pace.

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 course.

Please note that since WGF theory courses are available for a lifetime, the digital course fee cannot be refunded once the access codes have been communicated to the student via the internet.

Graduation policy

The Opals and Jade course includes one online test.

The results are received instantly after the test is completed. To pass the Opals and Jade course and receive your letter of completion, you must pass the test with a 70% score or higher.

This is a ‘General Interest’ course. After completion, students may upgrade to ‘Coloured Gemstones‘ and receive a credit equal to the value of the cost of this course (the cost will be deducted).