A bluish violet sapphire shows surprising effects under lab examination.

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

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

Bumble Bee jasper, first discovered on Java, exhibited at the Tucson Gem and Mineral Show.

A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.

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

Review of Franco Cologni’s In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels.

Natural moissanite crystals found in Israel have broken world records, with evidence of larger crystals in the area.

Review of Diana Scarisbrick’s Rings: Jewelry of Power, Love and Loyalty.

Examines the history of diamond production in Botswana and the long-term outlook for beneficiation through value-added industries.

Review of The Collector's Guide to the Minerals of New York State.

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、。

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

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.

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。

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。

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.

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.”

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