地質学者が、自身で運営する地球科学のウェブサイト、Geology.comへの訪問者に宝石に関するより多くの情報を提供できるようGGを取得します。

蝶結びは、その時代のスタイルを反映するために蘇って適応しながら、はるか昔のジュエリーやファッションにおいて人気のあるモチーフおよび最後の仕上げの手法として使われています。

Examines the color origin of color-change diaspore, known commercially as Zultanite, and compare the effectiveness of the chromophores it shares in common with corundum.

Reveals the internal features and spectroscopic data of these small natural pearls and offers the means of separating them from pearls of related mollusk species.

Chronicles the history of this cultural landmark, originally assembled for the Prussian king between 1701 and 1714, and its reconstruction by the Soviet Union starting in 1979.

Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.

Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.

Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.

Chatoyant vivid blue Brazilian tourmaline is examined in the Bangkok lab.

Unusually large prismatic pargasite inclusions observed in a Kashmir sapphire submitted to the Carlsbad lab for origin determination.

An exceptional ruby specimen is identified with a Montana origin in the Carlsbad lab.

Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.

Three freshwater pearls, two blister and one loose, were examined in the New York lab.

In the early 1960s, French ceramist and engineer Pierre Gilson succeeded in growing and producing flux synthetic emerald of commercially marketable quality.

Garnets have been known since antiquity. However, it was only during the late nineteenth century that the green variety demantoid—named for its “diamond-like” luster—was discovered in the Ural Mountains of Russia.

The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.

Summarizes data collected by GIA on more than 90,000 natural diamonds in this color range and presents their gemological and spectroscopic properties.

Held October 21 and 22 at Cinema Row, the Chicago Responsible Jewelry Conference drew 200 attendees who heard industry experts discuss safe, sustainable, ethical gem production and jewelry design.