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International Gemological Institute To Relocate, Expand Footprint in Midtown Manhattan

Jewelry Grader Stays Near Diamond District for New Office
The International Gemological Institute is relocating to 545 Fifth Ave. in Manhattan. (Anna Morgowicz/CoStar)
The International Gemological Institute is relocating to 545 Fifth Ave. in Manhattan. (Anna Morgowicz/CoStar)
CoStar News
March 15, 2022 | 9:16 P.M.

The International Gemological Institute, billed as the world’s largest independent laboratory for testing and grading gemstones and fine jewelry, has agreed to a long-term lease to relocate its New York office nearby in midtown Manhattan.

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