Heliodor 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.

  • customgemstones.com

    Gemstones, Sapphire, Tourmaline, Garnet, Spinel, Aquamarine, Sunstone, Topaz

    Gemstones, Sapphire, Ruby, Opal, Emerald, Aquamarine, Tourmaline, Zircon, Garnet, Tanzanite, Sunstone, Peridot, Spinel, Amethyst, Topaz and more.

  • cigem.ca

    Gemology World – Canadian Institute of Gemmology

    Dedicated to research and advance in education in the field of gemmology. Gemlab Research & Technology. Gemological Books and Instruments. Professional Development.

  • edelsteine-m-anders.de

    Edelsteine M. Anders Idar-Oberstein

    Edelsteine und Zubehör für die Schmuckgestaltung