Collector Network - Links for Coins, Bank Notes, Cards, and Stamps Collectors.

Technical papers for the mining industry.

Florida State University's birthstones under a microscope.

Canadian laboratory with gem courses, news, gem library, books and gem instruments.

Mineralogy Department.

Complete colored gemstone information resource.

Earth Science program at Emporia State University.

Earth Science Club of Northern Illinois.

Guides for jewelry and precious metals.

An Australian sapphire festival.

A nonprofit educational resource for the gem and jewelry industry.

Mailing list for gemstones, diamonds, gemology, faceting and gem trade shows.

Analyzes Burma ruby and sapphire, colored diamond, emerald and precious gemstone markets.

Canadian gem lab.

Indiana University ~ Purdue University at Indianapolis Department of Geology.

Research and communications tool for gem and jewelry trade events.

Mineralogy and gemology site in France.

Natural History Museum Mineralogy Department in England.

West Chester University mineral site.

Rockhound Association.

Newsletter for jewelers from Thailand.

Business, research and educational projects in the gemology and jewelery fields.

Gemology course.

Information about gemstone and mineral photography.

An information site on Australian Opals.

Gem and Mineral class at the University of Texas, Austin.