CGA News
New Website Coming Soon!
We are busily working on a new website to replace this old one that has served us for many years.

Over time the code behind web content management tools becomes outdated, and eventually it's better to completely redesign a new site rather than simply updating old code. This site has reached the point where entering updates is truly painful and very time consuming.

If you are interested in courses, please call the office at 647-466-2436, or email us at the address provided in the "More Information" section above (replace the bracketed information with the conventional @ sign for emails). We have a full slate of classes starting in the Fall term.

We promise the new site will be much prettier, provide much more information, and will be updated and enhanced on an ongoing basis, so check back around mid-August 2014 for the opportunity to sign up for updates on classes, meetings and shows.
CGA Annual Conference - 2014


held at the The National Club Toronto April 3 -7, 2014

Full conference price includes : Friday evening cocktail reception and registration, Full programme of speakers Saturday and Sunday including continental breakfast, lunch and coffee breaks. Saturday gala dinner and graduation. Please advise of any dietary requirements.

Member price $395 Non Member price $445 Guest registration for the Gala Dinner and Graduation $95 per guest

Confirmed Guest Speakers:

Dr. Cigdem Lule GemWorld International, Chicago

Branko Deljanin CGL-GRS Swiss Canadian Gemlab, Vancouver

Willow & Quintin Wight Museum of Nature, Ottawa

Duncan Parker Dupuis Fine Jewellery Auctioneers, Toronto

Chris Smith American Gemological Laboratories, New York

David Sexton Jewelers Mutual, Toronto

David Ritter Canadian Jewellers Association, Toronto

David Hustler Canadian Enamelist, Toronto

Alex Barcados CD Barcados Co Ltd Toronto

Ryan Taylor Fair Trade Jewellery, Toronto


Priority registration for the workshops will be given to conference delegates.

Please note the pricing for the workshops.

Thursday April 3 Morning Practical Workshop held at the CGA classroom

Pearls Dr. Cigdem Lule

CGA Member $195  Non Member $245

Cultured pearls are one of the fastest growing sectors in the gem trade. Many varieties of Chinese freshwater pearls have earned widespread consumer appeal across the global market. However, visual similarity of these pearls to the once dominant seawater varieties like akoya and south seas have created some challenges for buyers, sellers and appraisal professionals whose responsibility is to accurately grade and price pearl products for their clients.

Today, cultured pearls are produced in an array of colors, shapes and sizes. Yet the standard remains the round to near round white products. Although visually similar, beyond appearance these products share little in common. Market availability, surface quality and of course price differ greatly from variety to variety as well as among pearls of the same variety. Accurately pricing cultured pearls requires the professional gemologist to distinguish not only between types, but also to correctly assess quality and shape factors within the same variety.

In this workshop, participants will examine and grade a variety of cultured pearls followed by a presentation concerning common enhancements and pricing considerations. The hands-on session is supported by a PowerPoint presentation featuring high quality images of certain characteristics useful for assessing overall grade.


Thursday April 3 Afternoon Practical Workshop held at the CGA classroom


Emerald Treatments and Pricing Dr. Cigdem Lule

CGA Member $395  Non Member $445

Half a day hands on program working with treated and natural emerald specimens with pricing information. Participants will examine emeralds treated by various methods and learn the practical techniques used in the field to recognize them. The degree to which an emerald has been enhanced is one of the major considerations when accurately pricing these popular gems. Tips regarding how to estimate the treatment level are also presented. Value factors such as colour, clarity and transparency are discussed based on the GemGuide pricing system. Emerald specimens have been specifically treated for this program to illustrate the common treatment types and levels of enhancement encountered in the market.


Friday April 4 Full Day Practical Workshop held at the CGA classroom

Corundum Treatments and Pricing Workshop Dr. Cigdem Lule

CGA Member $195  Non Member $245


The sale of treated corundum has dramatically increased the supply of products sold as ruby and sapphire. Accurately pricing corundum requires the professional gemmologist to distinguish not only between treated and natural, but also between the various treatment encountered in today global market.


The workshop is designed to reconcile the pricing of rubies and sapphires by specific treatment type. Participants will examine a variety of natural and treated ruby and sapphires followed by a presentation concerning pricing considerations. The hand-on session is supported by a PowerPoint presentation featuring high quality images of certain characteristics that reveal if and how the stones have been enhanced.


Monday April 7 9.00am-12.30 pm OR 1.30-5pm Held at the CGA Classroom

Identifying Diamond Types and Synthetic Diamonds with UV lamp, Microscope and Polariscope Branko Deljanin, B.Sc., GG, FGA, DUG

CGA member $185, non-member $195; includes CPF booklet ($25 value)

The use of treatments based on high-pressure, high-temperature (HPHT ) annealing, low pressure annealing and irradiation with energetic particles with the aim to alter the color of diamonds has become increasingly popular in the past 10 years. Diamonds can be also grown in the laboratory (HPHT or CVD) and these synthetic diamonds could be colorless (type IIa), yellow (type Ib ) and blue (type IIb ).

This lecture and workshop is designed for dealers, gemologists and appraisers. You will learn to identify different types of diamonds and synthetic diamonds. You will also learn about possible treatments/synthetic diamonds and their relation to types in order to know when to send stones to an advanced lab for further testing for natural, treated or synthetic origin.



Fall 2014 Professional Courses

The CGA's courses provide essential professional training to the gem and jewellery trade. For the new-entrant, the trade veteran or the hobbyist, the more you know, the more you'll appreciate this fascinating field. In addition to our professional gemmology programs, the CGA also offers general interest classes and advanced courses.

Fall 2014 Professional Programs

Gemmology Accelerated Program - Full-time Daytime

Sept 2 to Dec 18, 2014
Feb 2 - May 21, 2015

4 days/week (Mon-Thurs)

Jewellery Associate - Gemmology Specialist - Part-time Evening

September 30, 2014 to May 12, 2015

1 evening/week (Tuesdays)

Gemmology Program - Part-time Evening

September 29, 2014 to May 14, 2015

2 evenings/week (Mondays & Thursdays)

Classified Ads

Visit the Classified Ads section on the website to see the latest employment opportunities for gemmologists as well as a posting for a volunteer website administrator.

Registered members of the website may add their own classifed ads and weblinks. Contact the CGA office to find out how.

Accessing The CGA Group Insurance Program Just Got Easier

Canadian Gemmological Association members now have thier own Allstate Insurance internet landing page. The landing page will enable members to get a no obligation quote online and to enter the sweepstakes to win a $1,000 Home Depot gift certificate.

Click here to go to the website.


Classified Ads