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

GIA（米国宝石学会）は、ジャンマリア・ブチェラッティ財団と共同で、2026年2月6日、第9回「ジャンマリア・ブチェラッティ財団ジュエリーデザイン優秀賞」をGIAカールスバッド校卒業生のCatherine “Cathy” Aulick氏に授与しました。

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.

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.

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

An updated edition of Herbert Tillander’s book is now available.

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

GIA’s president and CEO Susan Jacques is honored with the Richard T. Liddicoat Award for Distinguished Achievement.

A pink spinel hosts a richly textured, opaque metallic inclusion.

GIA’s Al Gilbertson receives the American Gem Society’s highest honor.

Examination of four heart-shaped pearls reveals cavity filling and plugging to improve durability.

Multiple vivid blue lazurite inclusions are observed in a near-colorless scapolite.

The date and topic of the 2026 Sinkankas Symposium is announced.

A semi-baroque saltwater nacreous pearl presents identification challenges in the Mumbai laboratory.

The blunt termination of a red manganotantalite inclusion displays a striking contrast against a greenish blue sapphire.

Fibrous mannardite crystals are observed in three colorless quartz samples.