https://www.gemology.co.il/home/
The Center of Gemological Studies was established by Eli Dori in 1979 and offers group and individual gemological courses in Hebrew and in English. This is the...
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https://www.jtv.com/category/gemstones/gemological-education/_/N-3143711877
Discover new knowledge and curiosity with JTV's gemological education resources. Find jewelry making guides, history books and more on JTV.com.
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https://www.talvegoodman.com/professional-jewelry-gemological-and-appraisal-services
Serving the St. Louis area with expert services in independent USPAP appraisal, diamond/gemstone testing & evaluation, consulting, and jewelry maintenance.
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https://www.gemlab.com/
GemLab offers accurate, unbiased diamond appraisal, diamond certification, lab reports, jewelry appraisal, watch appraisal in New York City and Long Island.
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