Research Article Search Results

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.

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

Documents the retrieval and testing of P. maxima cultured pearls from a Lombok hatchery.

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

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

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

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

A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface.

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

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.