Research Article Search Results

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

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

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

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.

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.

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

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

A round-cut specimen set in a ring is the first mounted CVD synthetic melee diamond identified by GIA.

Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.

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