GIA is seen as one of Gemological Science International's top competitors. GIA was founded in Carlsbad, California} in 1931. GIA is in the Non-Profit Organization industry. Compared to Gemological Science International, GIA generates $185.1M more revenue.
International Gemological Institute. is Gemological Science International's #2 competitor. International Gemological Institute. was founded in 1975, and its headquarters is in Antwerp, Antwerp. International Gemological Institute. competes in the Business Support Services industry. International Gemological Institute. has 634 more employees than Gemological Science International.