Gemological Science has lost a Champion: George Rossman, PhD, 1944–2026
In Memoriam
George Rossman, PhD, 1944–2026, Professor of Mineralogy, Emeritus,California Institute of Technology , died on Friday, February 6, 2026. He was 81 years old.
On...
Inside the War Room: How AGTA Took Its Tariff Case to Washington
On day two of the AGTA DYNAMIC Seminar Series, AGTA President Bruce Bridges and CEO John Ford did not step up with prepared remarks....
Scoping It Out: Photomicrography from Melissa Scarani
Here we have a 0.25 ct. round brilliant cut diamond with an extraordinary garnet crystal. Melissa not only captures the crystal beautifully, she manages...
CIBJO issues Warning: “Non-authorized Individuals Fraudulently Presenting Themselves as CIBJO Representatives”
CIBJO, the World Jewellery Confederation, has issued an urgent warning to the global jewelry trade after learning that individuals are falsely claiming to represent...
Too Much Chromium? When Red Gems Stop Glowing
For generations, gemologists and jewelers have been taught a simple rule: chromium makes red gems beautiful. It is the element behind the glow of...
“Synthetic Gems #1” – GemQuest presents Dr. Arya Akhavan
Ray Hill and Dr. Clemens Swarzinger invite you to attend "Synthetic Gems #1", presented by "one of the world's leading experts on the topic,...
The 1869 Patent for “New Manufacture of Artificially Formed Mineral Carbon”
In our last newsletter, we began what appears to be an ongoing series of gem-related patents dating back more than a century, uncovered and...
Gem-A’s Photographer of the Year Competition! And the Winners are ….
Each autumn, Gem-A receives submissions for this contest, not just from Gem-A students, alumni and members, but from colleagues and peers around the world....
In Memoriam: George Peter “Pete” Yantzer
George Peter “Pete” YantzerNovember 10, 1948 - January 10, 2026
George Peter “Pete” Yantzer, a respected gemologist and influential figure in modern diamond grading, passed...
Look Who Showed Up in Guy’s Diamond?
We LOVE this!
We received an email from Guy Borenstein, F.G.A E.G.G , Director of Gemological Research and Lab Services for Stuller Inc. in Lafayette,...
Artisanal Mining: Illegal or Not? – A View from the Diamond Mining Sector
Over the years, we’ve published numerous feature stories focused on artisanal gem mining and the people behind it. We support responsible artisanal miners who...
2026 AGA Tucson Gemological Conference and Gala / February 4, 2026: Conference Schedule, etc…
The 2026 Accredited Gemologists Association's Tucson Gemological Conference and Awards Gala will take place at the Tucson Marriott University Park on Wednesday, February 4,...
