Australian Gold Nuggets http://perthmint.com.au/agn/
The Mint started up after the Kalgoorlie gold-rush and has been buying nuggets from prospectors ever since. It guarantees the authenticity of these increasingly rare mineral specimens.
Bedrock Fossils http://bedrockfossils.com/
Provides ancient fossils and minerals. Offers ammonites, orthoceras, and trilobite specimens either in their natural state or polished.
DJ Minerals http://www.djminerals.com/
Rock and mineral kits, fossil kits, rock hammers and other geological supplies, as well as pure talc for carving and statuary.
GeoFossil http://www.geofossil.com
European fossil supplier. An extensive selection of authentic fossil specimens from over the world, classified by expert paleontologists.