“Lab-Grown” is Out, “Synthetic” is Back In: GIT Aligns with CIBJO – and France
Starting October 1, 2025, GIT–the Gem and Jewelry Institute of Thailand's gem testing laboratory–will be updating the way it words its reports to better...
GIA’s “Laboratory-Grown Diamond Quality Assessment Report” – No More Clarity, Color, or Cut!
Now Offers Just Two Tiers — “Premium” or “Standard.”
We’ve been telling you this was on the way — and now it’s official. Starting October...
Four Color Highlights & One Old Mine Cut from Heritage’s Upcoming Fall Fine Jewelry...
Heritage Auctions' September 29 Fall Fine Jewelry Signature® Sale is still a few weeks away, but four loose gems and a mounted diamond are...
Into the Stone: Photomicrography from E. Billie Hughes
E. Billie Hughes, FGA, is a co-founder of Bangkok-based Lotus Gemology, a respected gemological laboratory and educational resource.
A graduate of UCLA, and a Fellow...
Understanding Fei Cui: The Trade Term Now Found on Jade Reports
Beginning June 1st, 2025, jadeite jade authenticity reports issued by Mason-Kay, started to look a little different. Mason-Kay, U.S. jade experts located in Colorado,...
Lotus Gemology: Emerald and Alexandrite in the same stone!
It's not every day you come across a gemstone that brings together two of the trade's most treasured varieties–emerald and alexandrite–in a single, faceted...
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...
