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What Country Do My Diamonds and Other Gemstones Come From?

Dr. James Shigley, GIA Distinguished Research Fellow, giving a lecture for students and the public on Gemstone Country of Origin Reporting March 2020 at GIA in Carlsbad. Photo by Emily Lane/GIA Since 1...

G&G Announces Most Valuable Article Awards

A matched pair of Kashmir sapphires, approximately 7 carats total. Photo by Robert Weldon/GIA. Courtesy of Amba Gem Corporation Gems Gemology is pleased to announce the winners of the Dr. Edward J. Gbe...

Spring 2020 G&G Available Now

After being delayed by the global pandemic, the Spring 2020 edition of Gems Gemology is available now. This issue features two articles that quantitatively analyze the causes of color in corundum and b...

The Stories Behind the Photos: A Gigantic Aquamarine and ‘G

The tools of a traveling field photographer include a map, notebook, pen, mobile phone with compass app and a digital camera. Photo by Robert Weldon Robert Weldon has traveled the world in pursuit of t...

GIA’s Knowledge Sessions: A New Way to Share Gemological In

Robert Weldon talked about this photo during the Behind the Scenes: Untold Stories from GIA Field Gemology Expeditions webinar. The photograph shows a model of Campbell Bridges famous tree-house glowin...