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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.

Crater of Diamonds State Park, AR - gem hunting in the US
Top Spots for Gem Hunting in the US

Visit one of the top gem hunting spots in the US. Go alone or with the family. A gemology-themed vacation can be fun, educational, and (maybe) profitable.

Moonstone Buying Guide

With sheen reminiscent of moonlight, moonstone is treasured across civilizations. Our moonstone buying guide can help you pick a gem for your next project.

denver gem show - gems on display
Denver Gem & Mineral Showcase 2017

With over 900 vendors and numerous geologic rarities, the 2017 Denver Gem & Mineral Showcase had plenty to see. Read about some highlights in our report!

Colorado gemstones - rhodochrosite pendant
A Visitor’s Guide to Colorado Gemstones

Colorado has a lot to offer gemologists and rock hunters. Before you visit, learn about Colorado gemstones as well as notable gem shows, museums, and clubs.

moonstone symbolism - necklace
Moonstone Symbolism

While moonstone has many popular mystical associations with the Moon, it's also connected to meditation and love. Learn about moonstone symbolism and lore.

A View of The Quartzsite Gem Shows

The Quartzsite gem shows attract gemologists and rock hounds from around the world. Learn what to expect and how to shop at these huge annual events.

Moonstone - India
Moonstone Value, Price, and Jewelry Information

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