 | Amethyst Galleries' Mineral Gallery - Provides a searchable database of mineral and gemstone descriptions, images, and specimens.
| Athena Mineralogy - Systematic classification of minerals and searchable database.
| Mindat - Searchable mineral database with physical and chemical properties as well as locality information.
| Mineral Spectroscopy - Information about color in minerals and the spectroscopy of minerals (mineral absorption spectra).
| Virtual Atlas of Opaque and Ore Minerals - Information about the identification and study of minerals.
| Web Mineral - Extensive mineral database containing crystallography, chemical composition, physical and optical properties, Dana classification, Strunz classification, mineral name origins, mineral locality information, and alphabetical listing of all known valid mineral species.
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