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

2026 年 2 月 6 日，GIA美国宝石研究院与 Gianmaria Buccellati Foundation联合颁发了第九届年度 Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design，获奖者为 GIA 卡尔斯巴德校区的毕业生 Catherine “Cathy” Aulick。

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于 2 月 6 日逝世，享年 81 岁。1995 至 2007 年间，他曾担任GIA美国宝石研究院理事会成员，他还是加利福尼亚理工学院 (Caltech) 的矿物学名誉教授。

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.