Geology
- 341
- Attard Minerals
- Mineral specimens of beauty for sale to collectors, earth science educators and museums worldwide
- 344
- California Gold Rush Miner
- Large selection of gold nuggets and articles about gold, gold prospecting and the California gold rush. Also provides the spot gold price.
- 345
- ChinaRuff Collection
- Offers Chinese minerals at low prices and shipping fees. Also arranges mineral tours in China.
- 347
- Collectors Edge
- Offers fine mineral specimens to private collectors, museums and dealers around the globe.
- 349
- Cooloola Rocks & Minerals
- Suppliers of Australian and world wide rocks, minerals and other specimens, from tiny to museum size.
- 350
- Cornwall & Devon Minerals
- Offering for sale old and contemporary minerals from the United Kingdom.
- 351
- Dakota Matrix Minerals
- South Dakota dealer offers minerals and rocks for the collector, rockhound, geologist, and earth science student, from locales worldwide.
- 354
- Edwards Minerals
- Specialists in fine European and US classic mineral specimens, worldwide aesthetic minerals and gem crystals.
- 355
- Gemron
- Mineral specimens, crystals and natural rough, sourced mainly in Namibia and Southern Africa. Both the advanced collector and beginner are catered for.
- 356
- Geodeland
- Sales of geodes, fossils, and minerals from the Elmwood Mine, and other U.S. localities.
- 357
- Geosol Imports
- Direct importers of Amethyst Cathedral geodes from Brazil. All shapes and sizes are available.