The examination of a nearly complete trapiche emerald crystal–which are difficult to obtain–is consistent with the findings of previous studies.

Maine-based designer Derek Katzenbach discusses his education and inspiration.

Jeff Hapeman of Earth’s Treasury (Westtown, Pennsylvania) loves a gemstone with a good story.

Shahin Aboosalih of SR Trading shares his insights on the gem and jewelry industry.

Traveling gallery exhibits stunning mineral specimens during the Tucson gem shows.

The World Jewellery Confederation (CIBJO) released the first edition of the Responsible Sourcing Book in January 2019.

A wholesaler supplying the bridal market with recycled gemstones and antique cuts shares his thoughts on the market and on responsible practices.

An overview from the 2019 Tucson gem shows.

A composite of synthetically grown and natural diamond was recently identified by the Carlsbad laboratory.

Annotated reading lists compiled on Emeralds from Colombia

Researchers from GIA’s Bangkok laboratory seek to identify low-temperature heat treatment in basalt-related blue sapphires.

ダイヤモンドに閉じ込められた鉱物インクルージョンが大陸の構造を解明し、ダイヤモンドが形成された年代をGIAの研究員が判断する際の手がかりとなります。

デビアスは変動に対応し、Federal Trade Commission（連邦取引委員会）はラボで製造されたダイヤモンドに関する警告を発行します。また、302.37カラットのGraff Lesedi La Rona（ザ グラフ レセディ ラ ロナ）の詳細が発表されます。

この天然に鮮やかなブルーサファイアの採鉱および目立つ特徴を報告します。

CARLSBAD, Calif. – April 8, 2019 – Retailers participating in GIA’s Retailer Support Program can now use an enhanced collection of colored stone materials to tell the story of these beautiful gemstones to their customers.

ロシアのウラル山脈から産出されるプラチナに関する注釈付き書籍のリスト

CARLSBAD, Calif. – March 28, 2019 – On April 30, GIA will introduce the GIA Diamond Origin Report service which will confirm the country of origin of polished diamonds.

CARLSBAD, Calif. – March 28, 2019 – On April 30, GIA will introduce the GIA Diamond Origin Report service which will confirm the country of origin of polished diamonds.

ナミビア産の漂砂ダイヤモンドに関して編集された注釈付きの読書リスト。

リバイバルジュエリーは過去からインスピレーションを受けており、私たちの文明の豊かな歴史と私たちを結び付けます。