アフリカ生まれのカラーストーン専門家がアメリカを訪れた後、最愛の人と巡り合い、GGを取得し、新しいキャリアをスタートして人生が一変します。

Characterizes diamonds with exceptionally rare natural green color, based on GIA’s extensive database of samples.

Rare dissolution etch channels are seen in a natural diamond.

A report on turquoise from the only known U.S. deposit outside of the Southwest.

John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.

The GIA lab examines five gem-quality CVD-grown diamonds in sizes that reflect the improving technology of the synthetic gemstone industry.

Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.

Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.

A gemological investigation of the aquamarine that has emerged from northern Pakistan in recent years.

Miriam Kamau, owner of Mimo Gems Traders Ltd. in Nairobi, transformed from an office assistant to a dealer and miner to a representative of her country on the international stage of the colored gemstone trade.

The Responsible Jewellery Council (RJC) has announced plans to include colored stones and silver in the next revision cycle for its Code of Practices, which RJC members are certified against.

The first annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design was presented to GIA graduate Catherine Zheng.

Shows how genetic material extracted from small amounts of pearl powder can be a useful indicator of this akoya cultured pearl species.

エリカ・コートニーは数十年にわたり、ハリウッドスターたちのレッドカーペットを彩ってきた。彼女の色彩感覚と宝石の美しさを引き出す才能は、一目瞭然だ。

A sapphire from Pailin, Cambodia, hosts inclusions that are unusual for this material.

Analyzes the substructures that cause the intense iridescence observed in “rainbow” hematite from Minas Gerais, Brazil.

Dendritic inclusions in a pinkish-purple sapphire are revealed with fiber-optic lighting.

The material used to fill a large fracture in a diamond yields an unexpected iridescence under two different illuminations.