Tourmaline Gemstones


  • Hardness

    7.0 on the Mohs scale.

  • Occurrence

    Madagascar, North America, Brazil, Myanmar (Burma), Africa, Siberia, Australia, Sri Lanka (Ceylon). Tourmaline and opal are the birthstones of the month of October. Tourmaline is the national gemstone of the United States.

  • Appearance

    There are more colors of tourmaline than any other known gemstone. The lighter colored stones are more valuable.

  • Enhancements

    Refer to specific pages.

    More information on gemstone enhancements.

Tourmaline Varieties
Tourmaline Varieties