Christie’s Magnificent Jewels Auction: The Diamond Report / GIA Graded over 30 Diamond Lots!
As you know, when the Gemological Institute of America (GIA) weighs in on a diamond’s quality, the industry pays attention—and rightfully so. GIA isn’t...
Clarity Enhancement in Paraiba Tourmalines: A Closer Look 🔬
We saw this post the other day on FaceBook from the Gübelin Gem Lab - a topic we have been covering for some time...
GIA to Use ‘Premium’ or ‘Standard’ to Describe Synthetic Diamonds: Clarity and Color Grades...
"Change reflects narrow color and clarity range of the manufactured product"
In a move that feels both obvious and, at the same time, curious—not to...
The Hybrid Diamond Color Grading Master Set: How Cost and Availability Caused a Revelation
By now, you’ve probably seen press releases from AGA (Accredited Gemologists Association) and GCAL by Sarine, announcing the new Hybrid Master Set—a diamond color...
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...
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...
IGI Announces Special Colored Gemstone Report Bundle
IGI Press Release -
The International Gemological Institute (IGI), a full service gemological laboratory, announced the launch of GemPass by IGI during the AGTA...
Professor Dr. Henry A. Hänni: Former Director of the SSEF, died January 9th, 2025...
Professor Dr. Henry A. Hänni was a pioneering gemological scientist, educator, and mentor whose contributions have shaped the modern field of gemology. He served...
AGTA’s Tucson INSPIRE Seminars and Demonstrations: Plan Ahead
It’s January, and that means we’re all planning our daily schedules for the upcoming days in Tucson, Arizona, at the gems and minerals shows....
GIA Enhances its Emerald Reports: Filler Identification Now Available as an Option
GIA Enhances its Emerald Reports: Filler Identification Now Available as an Option
It was announced earlier this past week that GIA is adding "filler identification"...
