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Research Leaders with World Expertise


CGL-GRS Canadian Gemlab is dedicated to providing the best Research and Education services. Our President & Head Gemmologist Branko Deljanin is a world-renowned research gemologist and expert in testing gems and coloured diamonds using standard, advanced, and specialized research instruments. 


Here at CGL-GRS Swiss Canadian Gemlab we have extensive experience in research gemmology and provide services in identification and testing of gemstones.

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At CGL-GRS Canadian Gemlab, all research findings are utilized to develop educational lectures, programs and workshops, on a wide variety of gemological issues.

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