Gemstone Research Centers

IGI, the oldest institute of its kind in Antwerp, was founded in 1975 and along with its sister laboratories, is one of the leading gemological institutions worldwide.

GIA, is a non-profit institute dedicated to research and education in the field of gemology. GIA is also well known for its gem identification and grading services, and developed the famous "4 Cs"

The American Gem Society (AGS) is a trade association of professional gemologists founded in 1934 by Robert M. Shipley. The society trains and certifies jewelers, gemologists, and gemology appraisers.

EGL USA is one of the largest and oldest independent gemological institutions focusing on gemstone certification and research. Originally part of an international network founded in Europe in 1974

AGL was founded in 1977, and located in the heart of New York’s gem and jewelry district, AGL is an international gemstone testing facility specializing in colored gemstone analysis.

GAAJ ZENHOKYO is one of the world leaders in gemmological research and is known throughout the industry for its detailed research reports and lab alerts.

The Gem and Jewelry Institute of Thailand (Public Organization) is the governmental organization in the form of a public organization in accordance with the Public Organization Act B.E. 2542

The Swiss Gemmological Institute, part of the Swiss Foundation for the Research of Gemstones (SSEF: Schweizerische Stiftung für Edelstein-Forschung) was founded by trade organisations in 1974.

The Asian Institute of Gemological Sciences was founded in 1978 as South east Asia’s first educational facility devoted exclusively to the study of gemology.

Gubelin Gem Lab is an independent member of the Gubelin Holding. Apart from the Gubelin Gem Lab, the Holding consists of five other sister companies, each an independent entity with it's own strategic goals, operations and legal form.