Enhanced Gem Inclusions
Gem treatments can affect a stone’s value and stability. Learn how the most common procedures work and how to identify enhanced gem inclusions.
3 Minute Read
Gemstone Visual Examination Quizzes
Gemstone Coatings: CVD and More
Identifying Jade Treatments
Center-Fused Color Treated Gemstones
Rubellite Tourmaline Value, Price, and Jewelry Information
Ten Rare and Expensive Engagement Ring Stones
Eight Famous Sapphires and the Stories Behind Them
How to Dry Opals Safely
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!