Saturday, March 17, 2018

Conference 2018

60th Anniv for e-blast

Conference 2018 Speakers


Celebrate our 60th year as a Canadian Association!

Speakers are all confirmed and we will be udating soon so stay tuned for exciting announcements:

Mr.Dominic Mok
Lee A. Groat
Jon Phillips
Alan Hodgkinson
Dr. Cigdem Lule
Art Samuels
Stuart Robertson
Kellly Ross
Mike Botha

Mr. Dominic Mok
Mok  photo - Mok V2 low res Mr. Dominic Mok, the founder and Principal of the Asian Gemmological Institute & Laboratory Limited (AGIL), has 40 years of experience in the jewellery trade and is both a professional geologist and accredited expert gemmologist. Mr. Mok espouses “Integrity” as AGIL’ s mission from the beginning and he strictly adheres to the ethical principle of not being involved in jewellery trading. He utilizes advanced, high-tech instruments in his gem testing and annual jewellery audit appraisal services. All clients’ relevant information is kept strictly confidential.

Mr. Mok and his team members have accomplished a number of “first” in gem testing in Hong Kong. In the spring of 1993, AGIL issued the first ever Jadeite Testing Report in Hong Kong using an Infrared Spectrometer. Mr. Mok has always devoted himself to raising the bar in Hong Kong gem testing standard. He has conducted research on Fei Cui, diamonds and rubies, and published his research articles in different media. In January 2005, Mr. Mok led AGIL to further professional recognition. AGIL was the first gemological laboratory in Hong Kong granted HOKLAS ISO/IEC 17025 authorised qualification for Fei Cui Jadeite Jade testing. The qualification accredited by the Hong Kong Accreditation Service (HKAS) of the Hong Kong Special Administrative Region Government.

AGIL has been teaching FGA courses since 1983 and it is one of the earliest registered Accredited Teaching Centre (ATC) of the Gemmological Association of Great Britain (Gem-A). AGIL is authorized to teach FGA/DGA gemmology courses in Chinese and English. AGIL’s graduates were granted four times World           No.l “Best Candidate” of FGA/DGA exams. In 2009, sponsored by Dominic Mok,   Gem-A established a new worldwide examination honour, “The Mok Diamond Practical Prize’.

In 2016, Mr. Mok was appointed as the Honorary Assistant Professor of Earth Science department of the University of Hong Kong.

Alan Hodgkinson

President of the Scottish Gemmological Association, Freeman of the Worshipful Company of Goldsmiths, Honorary Member of the Canadian Gemmological, Honorary Registered Valuer.

Lifetime awards by AGA, AGTA, Gem-A and SGA, Author of Visual Optics, Author of Gem Testing Techniques and Originator of the synthetic emerald filter and the stained green jadeite filter.

Lee A. Groat
Groat-00008 2

Lee Groat graduated from Queen's University with a B.Sc.
(Honours, Geology) in 1982 and from the University of Manitoba with a Ph.D. in 1988.  From 1988 to 1989 he was a NATO Postdoctoral Fellow at Cambridge University.

Professor Groat has been a faculty member at the University of British Columbia since 1989.  His main research interests are the geology of gem deposits, pegmatites, the crystal chemistry of minerals, and economic geology.  He has published more than 125 papers in peer-reviewed scientific journals.

From 2001 to 2006 Dr. Groat was Editor of American Mineralogist.  He is the former Co-Editor (2012) and present Editor (2013-present) of The Canadian Mineralogist.

In 2003 Dr. Groat was elected a Fellow of the Mineralogical Society of America, and in 2009 the new mineral groatite, NaCaMn2+2(PO4)[PO3(OH)]2, was named in his honor.

Professor Groat is an Independent Director of multiple companies in the exploration and technology spheres and a partner in a private consulting company.

Jon Phillips


Jon has been in the jewellery business for over 35 years and worked in all of its “facets”. He is currently the Divisional Manager for Canadian Diamonds at Corona Jewellery Company Ltd. in Toronto, Canada. Part of Jon’s responsibilities includes managing the rough to polish systems for Canadian Diamonds including purchasing of the rough directly from mining companies to working with diamond polishing factories to produce the final product.

Jon is also the lead instructor for Corona and travels worldwide to promote Canadian diamonds and gold. He is Corona’s first contact for anti-money laundering (AML) and Responsible Jewellery Council (RJC) compliances.

He has worked for BHP Billiton Diamonds as a Marketing Manager in both Vancouver and Antwerp and as a service Manager for Birks in Vancouver. Jon and his wife Carol ran their own custom jewellery business in Vancouver for fifteen years which is where Jon obtained his training as a journeyman goldsmith.

Jon is a Certified Gemologist (CG) from the American Gem Society (AGS) and a Graduate Gemologist (GG) from the Gemological Institute of America (GIA).  

Jon also currently sits as the chairman of the Accreditation and Certification committee of the Responsible Jewellery Council (RJC) and is a past member of the Standards Committee.  Jon is a member of the GIA Alumni Advisory Council and past vice-president of the diamond commission for CIBJO. He currently sits on the boards of the Canadian Jewellers Association (CJA) and Canadian Diamond Code of Conduct Committee (CDCC).

Çidem Lüle, PhD, FGA, GIA GG , DGA

Dr. Lüle is a mineralogist, an award winning gemologist and the owner of Kybele LLC consulting firm C. LuleFLO 4494 based in Illinois, USA. As an independent researcher, she has dedicated a large part of her career to archaeogemology; the identification of gem findings from archaeological sites, with an emphasis on origin investigation. Her consultation services also include developing tailored edu- cation for the gem professionals, appraisers, gemologists and gemology students. She special- izes in mineral appraisals.

Professional Education
BSc. In Geo Engineering, Ankara University, Turkey, 1995
Diploma in Gemmology from Gemmological Association of Great Britain (FGA), 1998 Diamond Diploma from Gemmological Association of Great Britain (DGA), 1998
MSc. in Mineralogy, Ankara University, Turkey, 1999
Graduate Gemologist, Gemological Institute of America (GIA), 2005
PhD. in Mineralogy, Hacettepe University, Turkey, 2006

Industry Affiliations
  • Member of The Scottish Gemmological Association (SGA), 2008–present
    Accredited Senior Gemologist member of Accredited Gemologists Association (AGA), 2011–present 
  • Member of Mineralogical Society of America, 2011-present
  • Member of National Association of Jewelry Appraisers 2018
  • Employment, Industry Service and Recognition 
  • Research Assistant at Mineralogy Department, Ankara University, Turkey, 1999-2002
  • Staff Gemologist and Sales Assistant at R. Holt and Co., London, UK, 2002-2004
  • Gemology Instructor at GIA London Campus, London, UK, 2004-2010
  • Director of Development Gemworld International, 2011- 2017.
  • Contributing editor to the GemGuide and Gem Market News published by Gemworld International, 2011- present.
    Technical advisor the World of Color system published in 2014.
  • AwardedtheprestigiousAntonioC.BonannoExcellenceinGemologyAward,2016. 
  • Conference Co-Chair, World of Gems Conference V, 2017.

 Art Samuels
Art-Bio-Picture Art Samuels has had two full careers.  The first was on Active Duty in the U.S. Navy for 24 years where he was a Naval Flight Officer and an expert in Soviet Submarines. Art retired as a Commander where he switched from " Subs to Stones" and he is currently the founding Partner in 7 high end retail stores in South Florida, and Partner in 2 wholesale Gem & Jewelry companies ( Vivid Diamonds & Jewelry, 

            Art Samuels is an active buyer and seller of fine Gems and Jewelry, using his gemological skills to Treasure Hunt in the Estate Jewelry marketplace.  He is an outspoken proponent of change to improve our industry, and a speaker who freely shares his practical gem experiences and insights on making money.  Art is deeply involved on numerous boards of gemological and trade organizations such as the Accredited Gemologists Association (AGA) and the Diamond Bourse of the Southeast United States. 

Stuart Robertson

SR HeadshotJCK   
Stuart Robertson, Graduate Gemologist (GIA)

Stuart Robertson is the Vice President and Research Director of Gemworld International, Inc., located in Glenview, Illinois, USA. He also serves as Gemstone Editor of the periodicals published under the company’s GemGuide and Gem Market News brands. In addition to Gemstone Editor, Stuart is an award-winning appraiser and gemologist; he is also the co-developer of the industry course, Corundum Treatments and Pricing.
Stuart is a recipient of the prestigious Antonio C. Bonanno Excellence in Gemology Award and the AIJV Valuer of the Year Award.

Kelly Ross
Ross Bio Image -22018
Kelly Ross is a security specialist and expert in the criminal use of diamonds gemstones
and precious metals. He 
worked in the RCMP as thier subject matter expert on diamond and jewellery based crimes, relating to fraud, theft, money laundering and counterfeiting. He has conducted investigation on a national and global scale and represented the RCMP to froeign police agencies and anit-money laundering agencies.  

He holds gemological designations from several schools including the Canadian Gemmological Association and completed a Maters of Arts degree researching the criminal use of diamonds and jewellery.

He currently works in security and fraud investigations in the financial sector and is regularly called on to assists Canadian and international law enforcement with training and investigations on diamond and jewellery related crimes.

Mike Botha
IMG 2261

An internationally acclaimed master diamond cutter with 48 years of experience in the profession, Mike has worked in South Africa, Russia, and in Canada (Vancouver, Yellowknife and Prince Albert) on some of the world’s largest diamonds.

He worked as the occupational certification officer for the diamond industry in the Northwest Territories under the Department of Education, Culture and Employment, as well as the technical consultant for the Department of Industry, Tourism, and Investment. He was the chief instructor at Aurora College in Yellowknife for their diamond polishing program, which earned the college the Yves Landry award for educational innovation in 2004.

Other achievements:
      At the age of 28 he was one of the historic team of diamond cutters and polishers who worked on the Premier Rose Collection.
      His in depth knowledge of diamond crystallography has enabled him to do training workshops in various locations including the U of A in Edmonton for Dr. Thomas Stachel’s department.
   He developed a system of trigonometric profiling of fancy shaped diamonds resulting in perfectly shaped diamonds.
      He was the technical lead on the Diamond Standards and Certification development initiative for the Government of the Northwest Territories.
      He developed a number patented diamond shapes.
      As a 3D modeler, he designs diamonds with superior light performance than the current round brilliant paradigm.
      Mike has rare perspective, craftsmanship, leadership, and entrepreneurial enthusiasm. His lifetime experience and in-depth knowledge of diamond cutting, polishing, and diamond crystallography enabled him to develop the acclaimed Sirius Star®…the world’s brightest diamond® range of diamonds shapes.
      Mike has been a speaker on Light Performance and Facet Definition of Diamonds at jewellery shows and other events in Japan, Korea and Namibia as well as at various locations across North America. He has also done workshops and training at several North American events.
      He recently cut the Esperanza diamond which was discovered in the Arkansas Crater of Diamond State Park. To date, this is the most valuable diamond ever discovered in the USA.

Conference 2014

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.