Dakota Matrix Minerals - nice site with frequent updates
Attard's Mineral X-Ray Diffraction Service
Harlequin Minerals, Gems, Rocks and Fossils
RedAmethyst - rare and unusual Canadian amethyst crystals
mindat.org online mineral database
the natural history museum mineral collection
the mineralogical record
rockwatch - the club for young geologists
minerant.org: the mineral collectors page
The Vug: portal to everything rock & mineral related on the web!
RockShop.cz - Kalat Fine Minerals
Fine mineral specimens from Russia, China, Pakistan and other worldwide locations. Hand selected moldavites for collectors and jewelers.
Paraiba International specializes in cut and finished tanzanite gemstones and jewelry, as well as other gems such as topaz, opal, ruby, and more.
Walsh Brothers Clocks Watches and Jewellery
Independent jewellery shop based in the high street, Beckenham, Kent.
Mineral site directory.