HEATKEYS

American Gem Trade Association. The Natural Colored Gemstone and Cultured Pearl Source of Information and Ideas

Custom made jewelry, unique designs handcrafted with fine gemstones. Designer art jewelry handmade in gold and silver featuring designer rings, men

An interactive reference guide to rocks, minerals, and gemstones.

National Geographic Science and Space Home Page.

Artisan Gemstone Jewelry Treasures created with Mystical Flair! Welcome to Shimmerlings, a new experience in artisan jewelry. Treasures embodied with good intentions, the power of nature and the art of embellishment...enjoy!

On line Gemology Course, learn how to grade and identify gemstones, diamonds and colored stones. Get hands on experience using real gems.

Learn about the different types of gemstones and loose gemstones used for jewelry and other purposes.

Buy Gemstones Online. Loose Semi-Precious and Precious Stones: Sapphire, Spinel, Topaz, Garnet, Tourmaline, Opal, Emerald, Ruby, Amethyst and Birthstones

Producers of The Guide to Wholesale Gem Pricing and The Guide Appraisal Software for the Jewelry Industry. The Guide includes pricing for Diamonds, Colored Stones, Pearls, Opals & Jade.

Gemstone.org - International Colored Gemstone Association

Affordable, unique handmade fashion jewelry designed by Harmony Scott, of Aspen, Colorado.

USGS Mineral Resources Program Home Page: A source of unbiased information on the occurrence, quality, quantity, and availability of mineral resources. This website contains information about the Program, current activities, and products.