Schools and institutions links

Gemology World Gemology World - the Canadian Institute of Gemmology (C.I.G.), Gemological Interactive Website

GTL Laboratory - Jaipur Gem Testing Laboratory, Jaipur (Sponsored by Ministry of Commerce, Govt. of India)

Open School of Gemology Free and open online gemology course in Diamond

cga.or.th Official site of the Chanthaburi Gem and Jewelry Traders Association

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