The soon-to-open GIA campus in London is now enrolling students for classes beginning in August 2026.

De Beers Group and GIA today announced the signing of a definitive agreement for GIA to acquire a 30 per cent shareholding in Tracr.

Explore nature’s diamond sculptures—264 rare rough diamonds examined by GIA scientists for their unique shapes and raw brilliance.

Phenomenal gemstones dazzle with unique optical effects like iridescence and play-of-color. Discover how your favorite gem phenomena actually work.

GIA (Gemological Institute of America), together with the Gianmaria Buccellati Foundation, presented the ninth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design on February 6, 2026, to GIA Carlsbad graduate Catherine “Cathy” Aulick.

GIA (Gemological Institute of America), together with the Gianmaria Buccellati Foundation, presented the ninth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design on February 6, 2026, to GIA Carlsbad graduate Catherine “Cathy” Aulick.

George Rossman, a member of the GIA Board of Governors from 1995 to 2007 and professor of mineralogy, emeritus, at the California Institute of Technology (Caltech), passed away on February 6 at age 81.

An overview of the Winter 2025 Gems & Gemology content.

GIA offered a variety of hands-on sessions for attendees during the Converge conference.

An overview of more than 30 posters presented at the Converge conference.

Near-colorless heulandite crystals in an Ethiopian opal resemble the segmented bodies of worms.

Microscopic examination reveals intriguing growth tubes in a copper-bearing tourmaline.

A perfectly shaped euhedral tourmaline crystal is identified in a faceted tourmaline.