DMF International: Unites dealers of minerals, fossils and precious stones as well as publishers and dealers of geological accessories, and organizers of mineral fairs. Deutch, English.
Links for Mineralogists: Annotated links to internet resources, especially for mineralogists, petrologists, crystallographers, and geologists.
Mineral Collectors Links Page: Internet mineralogy portal containing links to sites related to minerals.
Mineralogy and Petrology Research on the Web: Links to web pages (e.g., journals, organizations, and research groups) especially useful for researchers in mineralogy and petrology.
The Vug: Extensive portal to mineral, gem, fossil and related web sites.