International Gemological Institute (IGI)

International Gemological Institute (IGI) offers courses in grading rough and polished diamonds and in colored stone identification.

579 Fifth Ave
New York, NY 10017

p: 212-753-7100
info@igi-usa.com
www.igi-usa.com

Specialties

Gemology

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Jewelers of America

In 1906, Jewelers of America was founded by jewelers for jewelers, with a desire to advance the professionalism and ethics of the jewelry industry.

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