Established in 1931, GIA is the world's largest and most respected nonprofit institute of gemological research and learning.
Conceived 73 years ago in the august tradition of Europe's most venerated institutes, GIA discovers (through GIA Research), imparts (through GIA Education), and applies (through the GIA Gem Laboratory and GIA Gem Instruments) gemological knowledge to ensure the public trust in gems and jewelry.
The Gemological Institute of America
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