Bertrandite Websites:

  • coromotominerals.com

    Coromoto Minerals In Maine

    A site devoted to sharing the minerals and mining experiences at Mount Mica and Orchard Pit, Oxford County, Maine.

  • skyesgems.com

    Skye's Gems and Minerals from Around the World.

    Exotic Designer Gems, Designer Cabs, Rare Gems and Minerals from around the world. Specializing in Tiffany Stone, Bertrandite, Opalized Fluorite, Australian Opal, Blue, Purple,...