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,...
Scoping It Out: Photomicrography from Melissa Scarani
A beautiful shot of the octahedral face of a rough diamond crystal, showing the classic trigon growth markings. Examining and cataloging the surface condition...
Photomicrography: Images from Within, by Sammantha Maclachlan
"I have another image for you," says Sammantha Maclachlan.
We love this ...
"Today was a special day… Gemmologists know that there are some...
NAJA… On the Stand: Mastering Expert Witness Techniques for Jewelry Appraisers
A powerful, full-day workshop debuting at the 65th ACE©IT Winter Conference in Tucson
The National Association of Jewelry Appraisers (NAJA) is proud to announce a...
The Journal of Gemmology: The Winter Issue 2025
The Gemmological Association of Great Britain (Gem-A) has launched the latest issue of its flagship scientific publication, The Journal of Gemmology (Volume 39, No. 8, 2025).
Released...
