Research Article Search Results

Reviews the properties of exceptionally pure grandidierite from a new source.

Studies the formation and chemical composition of the largely unexamined alluvial sapphires from Russia’s Jewish Autonomous District.

Chronicles the famed emerald source through the adventures of Peter W. Rainier, who directed the mine from 1926 to 1931 and restored its former glory.

Examines the challenges of ethical sourcing and production of colored stones, and what some industry leaders are doing to address the situation.

Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.

Hardstone figures of two Russian imperial bodyguards, commissioned in 1912 by Nicholas II, demonstrate the House of Fabergé’s meticulous detail and craftsmanship.

The gemological properties of the first documented occurrence of red cordierite, from Madagascar, are examined.

一块帝王黄玉原石被雕刻成一颗精美的自由形态宝石。

A report on the HPHT growth of large, gem-quality colorless synthetic diamonds in China.

Lesser-known gem materials are seen in pieces alongside a collection created as an artistic inheritance for future generations of jewelry fans.

A recent rush in Madagascar yields new sapphire production.

A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.