Research Article Search Results

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

Natural-color saltwater cultured pearls (SWCPs) from Pinctada maxima were studied using UV-Vis-NIR and PL spectroscopy to better understand the mechanisms of their coloration and to separate them from other SWCPs with similar natural colors.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

Students in South Africa and Botswana are introduced to gemology, mineralogy and geology in GIA's Junior Gemologist Program.

The current production of cultured pearls from the black-lipped pearl oyster (Pinctada margaritifera) in the Federated States of Micronesia includes mostly beaded as well as blister and nonbead-cultured pearls in a wide array of colors.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

An examination of the gemological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.

A survey of recent advances in CVD synthetic diamond quality.

G&G announces the winners of the Dr. Edward J. Gübelin Most Valuable Article Awards for 2019.

Since the 1970s, Brazil has been a consistent source of emerald.

Dye treatments in yellow or “golden” cultured pearls have improved to the point that some samples show little surface evidence.

A presentation of parameters used to support GIA's symmetry grading system.