Gemfields, the publicly listed gemstone mining company, is undertaking a major expansion of the Montepuez ruby mine that it commissioned two years ago in Mozambique.

Review of Richard Hughes’s Ruby & Sapphire: A Collector’s Guide.

北京のZhaoyi店舗サロンを訪問するときは高級ジェダイトの世界へ一歩踏み入れてください。ジェダイトと中国文化の結びつきを知ることができます。

このパーセルの上質のブルーサファイア原石30個は、ナイジェリアのMambilla（マンビラ）地域産と報告されている。 それぞれの重さは1～5カラットである。 写真：Vincent Pardieu/GIA

From 31 different editions of philosopher Pliny's “Natural History” – including a copy published in 1496 – to George Frederick Kunz’s “Gems and Precious Stones of North America,” one of the most important works on gems, the library houses some of the rarest and most highly-regarded books in gemological and jewelry history.

An inside look at the Metropolitan Museum of Art’s “Unique by Design” exhibition.

Join a GIA team on a visit to the bustling jadeite trading centers of Guangdong Province, China. You'll observe a market understood by few Westerners, as industry leaders explain the intricate details of a gemstone that's also an integral part of the culture.

Review of Suzanne Ramljak's Unique by Design: Contemporary Jewelry in the Donna Schneier Collection.

Rising diamond prices ‒ especially half-carat to one-carat stones ‒ have slowed sales for the online diamond retailer.

Ronald McIntoshとWarren Anderson共著、Kentucky Agate: State Rock and Mineral Treasure of the Commonwealth（ケンタッキー州産アゲート(瑪瑙/めのう)：州指定の岩石および鉱物の財宝）の書評

Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.