Back Gemological Institute of America AST Gemological Institute of America Catalan Americký gemologický institut Czech Gemological Institute of America German Gemologia Instituto de Usono Esperanto Gemological Institute of America Spanish مؤسسه گوهرشناسی آمریکا Persian Gemological Institute of America Italian ジェモロジカル・インスティテュート・オブ・アメリカ Japanese Геммологический институт Америки Russian
 | This article needs additional citations for verification. (June 2023) |
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| Type | Private |
|---|---|
| Established | 1931 |
Academic staff | 21 Gemology & 9 Jewelry Arts Instructors |
| Location | , , United States |
| Website | www |
The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts.[1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality. The institute does so through research, gem identification, diamond grading services, and a variety of educational programs. Through its library and subject experts, GIA acts as a resource of gem and jewelry information for the trade, the public and media outlets.[2]
In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds.[2]
Today,[when?] the institute is headquartered in Carlsbad, California, and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.
- ^ "About GIA". GIA. Archived from the original on 2013-01-25. Retrieved 2011-04-05.
- ^ a b "Colored Diamonds Shine at GIA's GemFest in Tokyo". Diamonds.net. 14 April 2013. Archived from the original on 2021-01-28. Retrieved 2016-11-11.