Research Article Search Results

Reports on exceptionally rare trapiche-patterned rhodochrosite from the famed Capillitas mine in Argentina.

Explores statistical data and defining characteristics of gem-quality CVD synthetic diamonds examined by GIA since 2003.

Analyzes the gemological and geochemical characteristics of peridot from the Gia Lai province alongside specimens from other localities to gain insight into its formation.

Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original color through the use of incandescent light.

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.

A recent rush in Madagascar yields new sapphire production.

インペリアルトパーズの原石が、見事なフリーフォームの宝石へと彫刻される。

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.

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