September 2026 AWE & HKCEC
Join us at HKTDC Hong Kong to explore the latest from GIA, including instrument demonstrations, tools to support your business, education, on-site laboratory services, colored stone grading services, and more. Plus, don’t miss our Immersive Pearl Experience Corner at GIA’s main booth at HKCEC!
A Classification Scheme of Natural Radiation Stain Morphology and Texture on Diamond
Examines samples of Mona Lisa turquoise to identify their chemistry and structure, revealing copper as a major elemental component of the material.
Historical Gemology Reading Lists
Annotated reading lists compiled to give you an opportunity to learn more about the history of gemology
Historical Reading List: Tourmaline and other Gem Minerals from Southern California
Historical Reading List: Peridot from Egypt
Historical Reading List: Persian Turquoise
Historical Reading List: Ruby and Balas Ruby (Spinel)
Enumerating Diamond Cuts
Historical Reading List: Tourmaline and other Gem Minerals from Maine
The Transformation of Diamond Cut Quality Grading: Where Are We Now?
GIA researchers trace the history and transformation of diamond cut grading, highlighting scientific breakthroughs that are reshaping how cut quality, brilliance, and visual performance are evaluated.
Now Enrolling – New GIA London Campus Opening this Fall
The soon-to-open GIA campus in London is now enrolling students for classes beginning in August 2026.
Now Enrolling – New GIA London Campus Opening this Fall
The soon-to-open GIA campus in London is now enrolling students for classes beginning in August 2026.
GIA Acquires 30% Shareholding in Diamond Provenance Blockchain Platform Tracr
GIA Acquires 30% Shareholding in Diamond Provenance Blockchain Platform Tracr
De Beers Group and GIA today announced the signing of a definitive agreement for GIA to acquire a 30 per cent shareholding in Tracr.
John Cowley Joins GIA as Chief Financial Officer
John Cowley Joins GIA as Chief Financial Officer
GIA Opens New Campus in Taiwan
GIA Opens New Campus in Taiwan
Tom Moses to Leave GIA in May
Tom Moses to Leave GIA in May
The Gemological Institute of America (GIA) announced today that Tom Moses, executive vice president and chief laboratory and research officer, has decided to leave the institute after almost 50 years of service.
