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Research Leaders with World Expertise


CGL 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 Canadian Gemlab we have extensive experience in research gemmology and provide services in identification and testing of gemstones.

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At CGL 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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