Agate Buying Guide
Decorative, patterned forms of agate are excellent natural gems. Learn more about agate's mesmerizing patterns in our agate buying guide.
7 Minute Read
Related Articles
Chalcedony Value, Price, and Jewelry Information
Technically, chalcedony (kal SED' uh nee) is any form of microcrystalline or cryptocrystalline quartz, (meaning any form of quartz whose...
Read More
Agate Value, Price, and Jewelry Information
Explore the mesmerizing world of agate — from its varieties to jewelry uses and sources. Uncover the secrets of these...
Read More
Where Can You Find Agate Stones Forming?
Agate stones typically form slowly in the cavities of ancient hardened lava flows. Learn where you can see this process...
Read More
“Genesis And Classification Of Agates And Jaspers: A New Theory” Book Review
“Genesis And Classification Of Agates And Jaspers: A New Theory” insightfully explains the formation of these gems and features beautiful...
Read More
Latest Articles
Milarite Value, Price, and Jewelry Information
Very rare milarite crystals can occur in green and yellow colors. Transparent material can yield small but pleasant looking faceted...
Read More
Appraising Pearls: How to Grade Pearls
Novice gemologists and jewelers may find appraising pearls difficult. Our guide will show you how to appraise and grade different...
Read More
Agate Buying Guide
Decorative, patterned forms of agate are excellent natural gems. Learn more about agate's mesmerizing patterns in our agate buying guide....
Read More
Carving Techniques for Handling Inclusions in Transparent Gems
Inclusions don't have to result in a loss of mass or value when cutting transparent gems. Learn how to manage...
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!