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

A pink oval conch pearl displays firework-like flame patterns.

A photo tour of the GIA Museum’s latest exhibit featuring extraordinary crystals and gems central to the cultures of southern Asia.

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

A precious cat’s-eye boulder opal from Australia is examined in the Carlsbad laboratory.

Showcases the diverse natural shapes of rough diamonds and explores how geological processes create their unique forms.

Presents a comprehensive analysis of the gemological, spectroscopic, and trace element characteristics of a set of Shaanxi emerald samples based on standard and advanced gemological methods.

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.

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

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

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。

Review of Symphony of Jewels: Anna Hu Opus 2 by Janet Zapata with Sarah Davis.

Review of Masterpieces in Miniature: Engraved Gems from Prehistory to the Present by John Boardman and Claudia Wagner.

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