Examines correlations between surface microstructures and the orange peel effect in Russian white nephrite, proposing a formation model and revealing distinctive microfeatures specific to the material.

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

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

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

A snuff bottle submitted to TULAB as jadeite jade is identified as a dolomite aggregate with fuchsite.

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

An undrilled black bead is identified as an assembled imitation pearl made from shell fragments.

Although the reign of King Edward VII of Great Britain was relatively short (1902-1910), the age that bears his name produced distinctive jewelry and ushered in several new designs and manufacturing techniques. During this period, women from the uppermost echelons of society wore a profusion of extravagant jewelry as a way of demonstrating their wealth and rank. The almost exclusive use of platinum, the greater use of pearls, and the steady supply of South African diamonds created a combination that will forever characterize Edwardian jewels. The Edwardian age, truly the last era of the ruling classes, ended dramatically with the onset of World War I.

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.

翡翠の耐久性と、翡翠ジュエリーのお手入れ方法について学びましょう。

Edward Gübelin博士によって集められたコレクションの中には、世界中の産地からの珍しい宝石が多数あります。

A review of Diamonds: An Early History of the King of Gems by Jack Ogden.

Review of Figures & Faces: The Art of Jewelry by Patrick Mauriès and Évelyne Possémé

Review of Geology: A Very Short Introduction by Jan Zalasiewicz.