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As the creator of the Diamond 4Cs and the International Diamond Grading System™, GIA is trusted by museums, auctions houses, and consumers all over the world to grade nature’s finest treasures.
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Jul 21, 2014 · This informative four-minute video will help you choose a diamond, with the help of GIA, creator of the 4Cs of diamond quality. Whether you’re looking to buy loose diamonds, or how to buy a ...
- 4 min
- 1.3M
- GIA (Gemological Institute of America)
Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
With 65,000 volumes, 230,000 images, 2200 videos, and 1200 periodicals, the Richard T. Liddicoat Gemological Library & Information Center and Cartier Rare Book Repository & Archive is the largest, most complete library of its kind. search the catalog.
Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.