In Memoriam: Professor Mimi Ou Yang (1933–2026)
The international gemological community has lost one of its great educators, researchers, and pioneers with the passing of Professor Mimi Ou Yang Chiu Mei,...
GIA Commemorates the 250th – Celebrate the 250th Anniversary of the United States of...
Red, White, and Blue
from GIA - Carlsbad, CA
Red, white, and blue may be familiar colors, but the gems that display them are anything but...
AGTA’s 2026 Spectrum and Cutting Edge Awards
Now Open for Entries!
Here is your official invitation, "to enter one of the most prestigious jewelry design competitions in the world."
The AGTA Spectrum &...
Does the Emerald Still Match the Report? – SSEF Issues Trade Alert
TRADE ALERTSSEF - the Swiss Gemmological Laboratory
SSEF Issues Trade Alert After Identifying Re-Filled EmeraldsAccompanied by Earlier "No or Minor Enhancement" Reports
Picture this:
An emerald with...
GCAL Expands 8X Grading to Cushion Cuts: How Much Precision is Enough — and...
For decades, diamond grading reports have documented a stone's color, clarity, carat weight, and proportions. Yet anyone who has spent time comparing diamonds knows...
“Colors of the Diamond Market” – 2026 AGA Virtual Conference: This Tuesday, June 23,...
The Accredited Gemologists Association (AGA) hosts a dedicated virtual event focused on the diamond market and gemology.
The conference—"Colors of the Diamond Market"—provides insights into...
Into the Stone: Photomicrography from E. Billie Hughes
This time, Billie Hughes gives us something rarely seen: a before-and-after-and-after-again look at what happens to an inclusion during heat treatment.
As gemologists, we are...
Chicago Responsible Jewelry Conference
Connect with industry leaders and attend the Responsible Gem Boutique and the Chicago Responsible Jewelry Conference, taking place October 22–24, 2026.
Enjoy shopping at the...
For Your Summer Reading: We Have a Few Suggestions
Designing American Jewelry
by Ellie Thompson
An inspirational book about a jeweler's journey that helped shape her designs.
The Hardness of Emerald
by Ron Ringsrud
Ron Ringsrud's...
Gem-A Gemmology Conference Returns to London, November 2026
The Gem-A Conference will welcome renowned speakers, illustrious sponsors, and internationally revered gemmologists to The Leonardo Royal Hotel London St Paul’s for a weekend...
SSEF Trade Alert: Fraudulent filling of fissures in emeralds after they have been laboratory...
TRADE ALERTSSEF - the Swiss Gemmological Institute
Based on a number of recent cases, the Swiss Gemmological Institute SSEF is issuing a trade alert concerning...
From Gem Pits to Mangoes
Nearly three years after planting hundreds of trees near Sri Lanka's gem mining districts,the results are beginning to show.
Sustainability reports often focus on promises....
