GIA Announces a Tariff Work-Around: Overseas Labs Accepting Larger Diamonds for Grading
In response to logistics challenges related to recently announced tariffs affecting global shipments of gemstones, GIA (Gemological Institute of America) will temporarily expand services...
Reminder: Beware Color Instability in Irradiated Ruby, Sapphire, & esp. “Padparadscha”
On Monday, March 24, 2025, CIBJO, The World Jewellery Confederation, sent out a joint press release alerting members of the trade regarding an uptick...
Bahrain Institute for Pearls and Gemstones Attains ISO Accreditation for Gemmological Services
Bahrain Institute for Pearls and Gemstones Attains ISO Accreditation for Gemmological Services
Press Release
The Bahrain Institute for Pearls and Gemstones (DANAT) has earned prestigious international...
CIBJO Congress: to Consider “Acknowledging” Labs that Comply with CIBJO’s Gemmological Blue Books
CIBJO Congress: to Consider "Acknowledging" Labs that Comply with CIBJO's Gemmological Blue Books
Reports from the 2024 CIBJO Congress, held in Shanghai from November 2...
Sotheby’s Diamond Extravaganza: Showcase in Abu Dhabi
Sotheby"'s hosted an exhibition in Abu Dhabi (9–10 April 2025) featuring a remarkable selection of colored diamonds, including one of the most significant blue...
Gemstone Fracture Filling: Labs Find It in Ruby, Tourmaline, Spinel and Garnet—Are You Still...
"We are seeing oiled stones outside of emerald every single day in the lab, and yet there is so little awareness about it in...
LMHC Agrees on Colour Stability Testing, “Cobalt Spinel,” Tanzanite, as well as “Fei Cui”
Getting seven of the world's leading gem labs to agree on anything is no small task. Yet for nearly 25 years, the Laboratory Manual...
AMS Micro: the Latest Tool for Detecting Synthetic Diamonds
AMS Micro: the Latest Tool for Detecting Synthetic Diamonds
De Beers Group Ignite launches latest diamond verification instrument, the AMS Micro
De Beers13 Feb 2024Press Release
First-of-its-kind...
Gems & Gemology
Gems & Gemology
SPRING 2023 - VOLUME 59, ISSUE 1
On a personal note, if nothing else, the images in this issue, especially in the Sapphire & Tucson...
Details of Rio Tinto’s “Beyond Rare” Tender: Very Rare Lots: Argyle Pinks, Reds, &...
Details of Rio Tinto's "Beyond Rare" Tender: Very Rare Lots: Argyle Pinks, Reds, & Violets, plus Two Large and Important Diavik's - a Yellow...
As Seen in Las Vegas: GIA UV Lamp & Viewing Cabinet – Comes...
As Seen in Las Vegas: GIA UV Lamp & Viewing Cabinet - Comes with a Comparison Strip
Gary Roskin - Press Release - GIA -...
GAMMA Vol. 2 Issue 2
GAMMA: The ICA | GemLab Journal
In this issue of GAMMA, you will find a wealth of information about rubies and emeralds.
In particular... A...
