Minerals
- Mineralogy Database - mineral species descriptions with links and a comprehensive image library
- Smithsonian Gem & Mineral Collection - Images of many minerals and gems
- Mineral Database - mineral database and mineralogical reference
Mineralogy Resources
- Smithsonian Mineral Sciences - National Museum of Natural History
- USGS Mineralogical Resources - Occurrence, quantity, and availability of mineral resources
- The Geological Society of America - Professional organization for geologists.
- Mineral Information Institute - Free teaching resources
- Mineral Resources for Teachers - Education resources for mineralogy
- Mineralogical Record - Mineral collector's journal. A publication of Mineralogical Record, Inc.
- Minerals.net - Information guide to rocks, minerals, and gems
- Bob's Rockshop, the Mineral and Gemstone Kingdom and Mineral Types : Databases of minerals
- Mineral Search - Searchable index of minerals from Mineral Galleries.