Examination of commercially-available “shell pearls” reveals imitation material.

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

カラフルなスライドショーや業界の専門家との洞察に満ちたインタビューを含め、今年のツーソンの宝石と鉱物ショーのカバレッジ、。

Join GIA on location at the inaugural Gemfields Mozambique ruby auction and go behind the scenes for an insider’s look at the rough gemstone auction world.

Explore “The Beauty of Science” – featuring the iconic gem, jewelry, mineral and sculpture photographs by Harold and Erica Van Pelt – through this virtual tour.

Teri Brossmer、Carole Richbourg、Gina D'Onofrio がカールスバッドのGIAキャンパスで、宝石と宝石鑑定について考えを伝えたり、アドバイスを行いました。

世界の超富裕層2014年上半期にさらに広い稀で、罰金に彼らの財布を開く。

Franco Cologni 著 「 In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels（手の賛美：ヴァンクリーフ＆アーペルにおけるファインジュエリーの芸術）」レビュー

Noëlle Vieillard-Jordi, GIA GG, designs jewelry that celebrates the independence of modern women – the one who finds joy, beauty and fun in everyday life, and who is buying her own jewelry that’s not just reserved for “special occasions.”

Alethe Fatherley, executive director of Jewelers for Water, hasn’t always tried to link social justice with the jewelry industry – in fact, the idea of encouraging an industry that’s both responsible and profitable has only crystallized for the East Coast-based gemologist in the last several years.

GIAチームは、中国への遠征中に、彫刻中の最も大型のジェダイトを紹介されました。 自然の美しさと名人の人生の何年もの歳月を捧げて作り上げるこの驚くべき芸術性は、現在も作業が続けられています。

One of the largest blue diamonds ever found ‒ weighing in at 122.53 carats ‒ was unveiled this week by Petra Diamonds; De Beers held the line on prices at the June 10-13 sight, which totaled about $650 million.