In recent months, sapphires treated under heat and pressure have been documented in the trade.

A pink synthetic moissanite is coated with a thin colored film, raising questions about the natural origin of its color.

A rough sample submitted as diamond is proven to be a synthetic moissanite with a thin diamond coating.

Examination of a type IaB diamond that exhibited instantaneous 2803 cm–1 FTIR absorption shortly after exposure to an ultra-short-wave UV source.

Single HPHT laboratory-grown diamond identified in a ring containing 194 natural diamonds.

Review of Narrative Jewelry: Tales from the Toolbox by Mark Fenn.

イラスト入りの新しい宝石ガイドは、小規模の採掘職人が自ら採鉱した宝石の品質と分類について詳しく学ぶのに役立ちます。

World-class fancy colored diamonds and truly historic jewels highlighted the 2018 auctions, but total jewelry sales were down from 2017.

大切な方に贈るギフトをお探しですか？12月の誕生石は、その方が12月生まれでなくても、すべての方の好み、スタイル、個性にピッタリ合ったギフトとなります。

マリー・アントワネットの宝飾品の10点が、11月14日に行われたサザビーズのジュネーブオークションで王室のその他の宝石90点と共に驚異的な価格で落札されました。

Abstracts of speaker presentations from the “Colored Stones and Pearls” session of GIA’s 2018 International Gemological Symposium.

A recap of the Futurescape Forum panel from GIA’s 2018 International Gemological Symposium.

Poster abstracts on “Gem Localities and Formation” from GIA’s 2018 International Gemological Symposium.

Poster abstracts on “New Technologies and Techniques” from GIA’s 2018 International Gemological Symposium.

This document provides the publication information for Gems & Gemology

Scenes from the 2018 GIA International Gemological Symposium

An overview of the Summer 2018 Gems & Gemology content.

Poster abstracts on “Diamond Geology” from GIA’s 2018 International Gemological Symposium.

Poster abstracts on “Diamond Identification” from GIA’s 2018 International Gemological Symposium.