Branko Deljanin, B.Sc., GG, FGA, DUG is senior gemmologist and president of CGL–GRS Swiss Canadian Gemlab Inc. in Vancouver (originally CGL, Canadian Gemological Laboratory, founded in 2009). He is a research gemmologist with 20 years of experience (GIA, EGL-USA, CGL-GRS Labs) in advanced testing of diamonds and gemstones. He is is considered an international expert on identification of diamond treatments and synthetic diamonds.
He co-authored books “Laboratory Grown Diamonds” and “Identification of Diamond types and Synthetic Diamonds using CPF (Cross Polarized Filters)” and “Fluorescence as a Tool for Diamond Origin Identification – a Guide”. He is instructor of “Intermediate to Advanced Gemology” programs on diamonds and coloured stones he is offering in Canada, USA, Russia, Brazil, Australia, Thailand, Hong Kong, UK, Turkey, Greece, Spain and other Mediterranean countries.
George Spyromilios, CDG has more than 25 years of experience in the jewellery industry. In 2002 George created Independent Gemological Laboratory Athens, I.G.L. School of Gemology and I.G.L. Appraisal & Valuation services. IGL Athens is the most respected gem laboratory in Greece.
In collaboration with CGL-GRS, IGL offers standard to advanced gemological courses for the trade covering an array of topics for diamonds and coloured stones. George is a member in good standing of the International Consortium of Gem Testing Laboratories (ICGL), The National Association of Jewelry Appraisers (NAJA), Association of Independent Jewellery Valuers (AIJV), G.I.A. Alumni, H.R.D. Graduates Club and Hellenic Goldsmith Association.
Conference & Proceedings Editor
John Chapman, Gemetrix, AUSTRALIA is a diamond scientist who formerly worked at Rio Tinto Diamonds. He has developed diamond-related machines and instruments including the ‘PL Inspector’. He currently consults throughout the industry pipeline from exploration to polished grading. He is also chief editor for the proceedings of the Mediterranean Gem and Jewelry Conferences.