Chemical Analysis in the Gemological Laboratory: XRF and LA-ICP-MS
The primary chemical analysis methods applied in gemology are XRF, which uses X-ray emissions for nondestructive testing, and LA-ICP-MS, which provides detailed analysis and greater sensitivity. LA-ICP-MS has become essential for origin determination and treatment detection.
GIA Field Gemology Team Completes One-Hundredth Expedition
GIA field gemologists recently completed their one-hundredth expedition, adding to the Institute’s unrivaled store of independently verified gemological information from colored stone mining locales around the world.
Registration Now Open for Converge 2025: A Historic Collaboration Between GIA and AGS
Registration for Converge, the singular gem and jewelry event combining the unique expertise of the American Gem Society (AGS) and the Gemological Institute of America (GIA), is now open.
Susan Jacques to Retire as GIA President and CEO
GIA has announced the planned retirement of its president and CEO, Susan Jacques, at the end of 2025. The Institute has begun a global search for a successor.
G&G in a Flash: The Latest on Laboratory-Grown Diamonds
Methods, Treatments, and Identification
GIA Board of Governors Welcomes Two New Members
GIA Board of Governors Welcomes Two New Members
At its recent meeting in Carlsbad, California, the Board of Governors of the Gemological Institute of America, Inc. (GIA) announced the addition of two new members, Lisa Bridge, President and CEO of Ben Bridge Jeweler and Dr. Wendy Bohrson, professor of geology at the Colorado School of Mines.
GIA Laboratory in Ramat Gan, Israel, to End Operations
The GIA laboratory in Ramat Gan, Israel, will end operations by the end of 2024 due to changes in the global diamond industry that resulted in significant declines in submissions from local clients over the last several years.
以色列拉馬特甘 GIA 鑑定所停止營運
The GIA laboratory in Ramat Gan, Israel, will end operations by the end of 2024 due to changes in the global diamond industry that resulted in significant declines in submissions from local clients over the last several years.
Hedenbergite in Quartz
Examination of polished quartz samples reveals crystal inclusions identified as hedenbergite and sphalerite.
Scenes from 90 Years of Gems & Gemology
“Rose” Quartz
Rare Musgravite Crystal in Green Sapphire
Interesting Metallic Platelets in Morganite
Fireworks Display in Russian Emerald
The inclusion scene in a Russian emerald resembles fireworks illuminating a night sky.
Ruby with Synthetic Overgrowth Lining Cavities
Observations of Oval-, Pear-, and Marquise-Shaped Diamonds: Implications for Fancy Cut Grading
Presents findings from observations of oval-, pear-, and marquise-shaped diamonds, laying the groundwork for a fancy cut grading system.
Generative Artificial Intelligence as a Tool for Jewelry Design
Evaluates the use of generative AI programs in jewelry design and addresses the related ethical, legal, and regulatory challenges.
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