Rubellite Tourmaline Buying Guide
Our rubellite buying guide can help you learn how rubellites are graded, what to avoid, and how to identify a high-quality stone or a bargain in the rough.
4 Minute Read
Related Articles
Tourmaline Value, Price, and Jewelry Information
Tourmaline is a name applied to a family of related minerals with widely varying properties. Tourmalines make very popular jewelry...
Read More
Mint Tourmalines: Gemstones for Our Times
Mint tourmalines, with their pastel shades and great clarity, are becoming more popular. Learn why these gems are well-suited to...
Read More
Tourmaline Engagement Ring Stones: the Ultimate Guide
Thinking about a tourmaline engagement ring? Learn everything you need to know to buy your perfect gem, from hardness and...
Read More
How Do Tourmalines Form?
Tourmalines are a large mineral group with a variety of chemical compositions. Learn how tourmalines form and why so many...
Read More
Latest Articles
Rutilated Quartz Buying Guide
Silky golden rutile inclusions in quartz have become quite popular. Read our rutilated quartz buying guide to help you choose...
Read More
Basic Business Rules: Buying Rough
Buying rough is the foundation of the gem cutting business. Learn the basic rules novice faceters need to know in...
Read More
Peridot Value, Price, and Jewelry Information
The modern August birthstone, peridot has been prized as a jewelry stone since ancient times. Always green in color but...
Read More
Traditional Diamond Cut Grading Methods
Traditional diamond cut grading methods prepare gemologists for making evaluations with minimal time, tools, and references. This step-by-step guide covers...
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!