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Gemological Science International

New York, United States |
Rating 4.09 3 Votes | Rate Now
Nature Of Business :

Education Institute, Services

Dealing In :

Jewelry Designing, Certification Courses

Total Items:
Established In:

Gemological Science International (GSI) is the only major gemological body established in the 21st century. Founded in 2005 in New York City, it provides reliable gemstone identification and grading services, is engaged in gemological research, and also offers a variety of educational programs.

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