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
Related Articles
Distinguishing Aquamarine Imitations
How can gemologists quickly distinguish aquamarines from aquamarine imitations? We’ll review some common lookalikes and their most notable differences.
Read More
Destructive Gemstone Tests: Acid Testing
Acid testing is a destructive procedure gemologists and mineralogists can use to determine if some pieces are real or fake....
Read More
Identifying Jade Treatments
Jade is one of the most popular and expensive gemstones. It can also receive many enhancements. Learn about jade treatments...
Read More
Emerald Myth Busters: Identifying Colombian Stones
Colombian emeralds can command premium prices. Jeffery Bergman separates emerald myth from fact when it comes to determining the origins...
Read More
Latest Articles
Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
Read More
Red Gemstones: Ruby, Spinel, Garnet, and Other Great Picks for Jewelry
Red gemstones are popular choices for engagement rings and fine jewelry. The three most popular stones are ruby, garnet, and...
Read More
Jadeite Value, Price, and Jewelry Information
Explore jadeite gemstone value, learn the facts about jadeite vs jade, and discover how to identify quality jadeite jewelry.
Read More
Tips for Cutting and Polishing Halite
Halite is a very difficult material to facet, even for experts. Jeff Graham offers his advice on how to cut...
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!