Wednesday, March 21, 2018


CGA Gem Conference 2014

April 3 - 6, 2014
The National Club
303 Bay Street
Toronto, ON  M5H 2R1

Conference Chairperson: Anita Beardwood
Workshops Coordinator: Karen Howard

The CGA's 2014 conference was a tremendous success, with a lineup of renowned speakers from different segments of the gemmological world, and an outstanding set of hand-on workshops, some offered in Canada for the first time. Conference information is posted here for the historical record.

Conference Includes
Friday evening cocktail reception
Full program of speakers, Saturday & Sunday
Continental breakfast and coffee breaks, Saturday & Sunday
Saturday gala dinner and graduation ceremony. Please advise of any dietary restrictions.
Member price: $395;  Non-Member price: $445; Guest registration for gala dinner & graduation: $95 per guest
Student price: $340 (currently registered CGA, GBC, VCC & CIJT students, plus anyone receiving a CGA preliminary or professional certificate)

5-Day Schedule
Conference Speaker Program (download here)
Speaker Biographies

5-Day Schedule

Thursday, April 3

9:00 am - 1:00 pm

Pearls Practical Workshop
Instructor: Cigdem Lule, GemWorld International
CGA Classroom, 55 Queen St W, LC105
2:00 pm - 5:30 pm Emerald Treatments and Pricing Workshop
Instructor, Cigdem Lule, GemWorld International
CGA Classroom
Friday, April 4

9:00 am to
4:00 pm
Corundum Treatments and Pricing Workshop
Instructor: Cigdem Lule, GemWorld International
CGA Classroom     
5:50 pm Conference Registration & Cocktail Reception
Marconi Lounge
Sponsored by Jewelers Mutual
Saturday, April 5
8:00 am     
8:00 am Breakfast & Conference Registration
Main Dining Room
9:00 am Conference speaker program
5:00 pm CGA Annual General Meeting
Open to members in good standing
Marconi Lounge
5:30 pm Cocktail Reception & Hors D'ouvres
Bar Lounge
6:30 pm  Graduation Ceremony
Main Dining Room
7:00 pm Banquet Dinner
Main Dining Room
 Sunday, April 6    8:45 am  Breakfast
Main Dining Room
 9:30 am  Conference speaker program
Monday, April 7  9:00 am - 12:30 pm Diamond Types & Synthetic Diamonds
Instructor: Branko Deljanin
CGA Classroom
1:30 - 5:00 pm Diamond Types & Synthetic Diamonds (repeat)
Instructor: Branko Deljanin
CGA Classroom


Conference Program Speakers
Download Speaker Program here.

Date Speaker Topic Affiliation
Saturday 9:00 am -

Dr Cigdem Lule  Archaeogemmological View on Ancient Gem Trade GemWorld International,
Branko Deljanin Update on production of CVC-grown
colourless and coloured small diamonds
CGL-GRS Swiss-Canadian
Gemlab, Vancouver
Willow & Quintin
Gem Travels in Vietnam Editor Emeritus, Canadian Gemmologist, Ottawa
David Sexton  Jewellery Crime in Canada Jewelers Mutual, Toronto
David Ritter Establishing a Web Presence Canadian Jewellers
Association, Toronto
Ryan Taylor Fair Trade Jewellery & Sourcing Materials Fair Trade Jewellery Co
9:30 am -
Chris Smith Spinel: A once forgotten gem on the rise  American Gemological Laboratories, New York
   Duncan Parker  Jewels in Art: Establishing the Age of Jewels  Dupuis Fine Jewellery Auctioneers
   David Hustler  Arts and Crafts Jewellery Enamel Artists  
  Alex Barcados Developments in the Coloured Gem Market CD Barcados Co Ltd


Speaker Biographies

Branko Deljanin, BSc, GG, FGA, DUG

  • expert in the identification of natural, treated and synthetic diamonds and coloured stones.
  • highly skilled in the use of traditional gem-testing instruments along with advanced spretrophotometes in detection of new diamond treatments (irradiation and annealing, HPHT, coatings, combinations of treatments)
  • field experience in Russia, Brazil, Australia and Sri Lanka with rough diamonds, coloured stones, treatments and synthetics



CGA Classroom
55 Queen St East, Lower Concourse #105, Toronto, ON  M5C 1R6

Instructor: Dr Cigdem Lule, GemWorld International
Thursday, April 3, 9:00 am - 1:00 pm; 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 acceptance acreoss the global market. However, the visual similarity of these pearls to the once dominant seawater varieties like Akoya and South Sea pearls has created some challenges for buyers, sellers and appraisal professionals whose responsibility it is to accurately grade and price pearl products for their clients.


Emerald Treatments and Pricing
Instructor: Dr Cigdem Lule, GemWorld International
Thursday, April 3, 2:00 pm - 5:30 pm; CGA Member $195/Non-Member $245

Half-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.


Corundum Treatments and Pricing Workshop
Instructor: Dr Cigdem Lule, GemWorld International
Thursday, April 4, 9:00 am -4:00 pm; CGA Member $395/Non-Member $445

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 treatments encountered in today's global market.

This 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, and then be introduced to pricing considerations. This hands-on session is supported by a PowerPoint presentation featuring high quality images of characteristic features that reveal whether stones have been enhanced, and how.


Identifying Diamond Types and Synthetic Diamonds with UV Lamp, Microscope and Polariscope
Instructor: Branko Deljanin, BSc, GG, FGA, DUG
Monday, April 7, 9:00 am - 12:30 pm OR 1:30 pm - 5:00 pm; 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 wit energetic particles with the aim to alter the colour of diamonds has become increasingly popular in the past 10 years. Diamonds can also be grown in the laboratory (HPHT or CVD) and these synthetic diamonds can be colourless (type IIa), yellow (type Ib) and blue (type IIb).

This lecture and workshop is designed for dealers, gemmologists and appraisers. You will learn to identify different types of diamonds and snthetic diamonds. You will also learn about the relationship between diamond types and possible treatments or synthetic origin, in order to know when to send stones to an advanced lab for further testing.