Geology
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- Someplace Special Gem Mine
- Gem mine near Shady Spring, West Virginia offers gemstone ore to the public by the bucketful. Garnet, sapphire, emerald and others gems are often found.
- 302
- TJ's Rocks and Gemcrafts
- Home-based business operating for almost 30 years. Supply rocks, minerals, crystals, and gemstones from around the globe. Large stock of Mexican geodes. Also offer both slab sawing and polishing services.
- 303
- The Rock Factory
- Cut and polished petrified wood, turquoise, onyx and other minerals - jewelry, collectibles, Native American fetishes, features petrified wood mined near Petrified Forest in Arizona.
- 304
- V-Rock Shop
- Suppliers of beads and carvings in amethyst, agate, and quartz from Brazil, and polished gemstones from China. Some mineral specimens also on offer.
- 306
- CLMC
- The Central Laboratory of Mineralogy and Crystallography, a department of the Bulgarian Academy of Sciences.
- 307
- Institute of Geological Sciences
- University of Berne department features a directory and archive of theses.
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- Department of Geosciences
- People, news, undergraduate and graduate information, research, events, policies and links.