Related Articles
gemstone luminescence
What is Gemstone Luminescence?

Gemstone luminescence is a glow that occurs when certain stones are subjected to energy such as UV light. This effect can help gemologists identify gems.

benitoite - ultraviolet testing
Ultraviolet Testing and Gemstone Identification

Ultraviolet testing can be crucial for gemstone identification. Learn the basics of this technique as well as how to make your own UV viewing box.

brilliant-cut cassiterite - Bolivia
Cassiterite Value, Price, and Jewelry Information

Everything you ever wanted to know about cassiterite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

double heart cabochon - Australia
Variscite Value, Price, and Jewelry Information

Everything you ever wanted to know about variscite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

hemimorphite cabochon - Arizona
Hemimorphite Value, Price, and Jewelry Information

Everything you ever wanted to know about hemimorphite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

cushion-cut danburite - Madagascar
Danburite Value, Price, and Jewelry Information

Everything you ever wanted to know about danburite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

3.60 cts axinite, oval cut - Pakistan
Axinite Value, Price, and Jewelry Information

Everything you ever wanted to know about axinite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

round brilliant andalusite - Brazil
Andalusite Value, Price, and Jewelry Information

Everything you ever wanted to know about andalusite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

bi-color smithsonite cab - Mexico
Smithsonite Value, Price, and Jewelry Information

Everything you ever wanted to know about smithsonite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

Esquel meteorite - a world of crystals
A World of Crystals

We live in a world of crystals. You don’t have to dig deep into the Earth to find them. Even the bones in our bodies and the dust in the air contain them. Learn more about crystalline minerals and gemstones as well as the crystals that grow in living beings.

Page 1 of 812345...Last »