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
Does Chrysoprase Jewelry Fade?
Should you wear chrysoprase jewelry only at night to protect the gem’s striking green color? Learn the facts here.
Read More
Latest Articles
The Dichroscope: A Faceter’s Guide
A dichroscope can distinguish the colors of pleochroic gems. Learn how gem cutters can use this tool to choose the...
Read More
The Microscope: A Guide for Gemologists
Sometimes, microscopic inclusions are the only way to distinguish natural from synthetic gems. This makes the microscope an essential lab...
Read More
Anatase Value, Price, and Jewelry Information
Anatase occurs in many beautiful colors, such as deep indigo and amber yellow. However, these rare gems are seldom transparent...
Read More
Choosing an Emerald Engagement Ring Stone
If you like green, you’ll love an emerald engagement ring. However, judging emerald quality is complicated. Learn how to find...
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!