Iolite Buying Guide
Soft, violet-blue hues have made iolite a popular stone. Read about the quality factors for this trendy gem in our iolite buying guide.
2 Minute Read
Related Articles
Cordierite Value, Price, and Jewelry Information
The crystal structure of cordierite has many similarities to that of beryl; indialite, the dimorph, in fact has the same...
Read More
Iolite Value, Price, and Jewelry Information
This stone, which represents one of the few relatively available and affordable blue stone options, is rapidly gaining in popularity....
Read More
Unique Gem Materials for Jewelry Design
Some gems have an appeal beyond their appearance. If you’re looking for a gem with a story to tell, try...
Read More
What is Gemstone Pleochroism?
Some gems show pleochroism, two or three different colors depending on the viewing angle. Learn why this occurs and how...
Read More
Latest Articles
Precision Faceting a Story Gemstone: Custom Faceting Advice
Your prized gemstones deserve custom faceting. Learn the benefits of working with precision faceters and tips for starting your own...
Read More
Aquamarine Enhancements
The most common aquamarine enhancements try to turn blueish green stones pure blue. Learn how heating and other aquamarine treatments...
Read More
Top Five Gemstone Investments for 2024
What are the top gemstone investments for 2024? Learn why these five gems, some well-known and some less so, are...
Read More
Paraíba Tourmaline Value, Price, and Jewelry Information
Discovered in 1989, paraíba tourmalines are among the world’s most prized gemstones. These rare gems are renowned for showing intense...
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!