Impossible Diamond Color Quiz
Test your ability to sort diamonds by color with our fun and quick Diamond Color Sorting Quiz. Learn a thing or two about diamond colors while you do.
Related Articles
Public Perception of Synthetic Diamonds Impacts Gem Market
Ever since synthetic diamonds became a significant player in the wider diamond marketplace in 2018, gem news has been dominated...
Read More
The Orlov Diamond: A Tale of Power and Intrigue
Discover the Orlov diamond's journey from Indian temple to Russian Imperial Sceptre. Learn how this 190-carat gem connects to Catherine...
Read More
Synthetic Amethyst: What is it and How is it Made?
Discover how synthetic amethyst is created, its key differences from natural specimens, and expert methods of identification in this comprehensive...
Read More
Future of Canadian Representation in the U.S. Jewelry Market: An Interview with Anita Agrawal
The Spirit of the Tucson Gem Shows
Tucson gem shows are neutral territory for those in the gem and jewelry...
Read More
Latest Articles
Topaz Buying Guide
Our topaz buying guide can help you learn how topazes are graded, what to avoid, and how to identify a...
Read More
The Minimum Cutting Technique for Gemstones
The minimum cutting technique will help you get the largest gems possible from rough. Learn how to deal with internal...
Read More
Haüyne Value, Price, and Jewelry Information
One of the major mineral constituents of lapis lazuli, haüyne is rarely found and faceted as a distinct gemstone. Collectors...
Read More
Tahitian Pearls: Beautiful Black Pearls
With dark bodies and colorful sheens, beautiful Tahitian pearls have mesmerized jewelry lovers for decades. Learn more about these and...
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!