Orthoclase Gemstones

  • Hardness

    6.0 on the Mohs scale.

  • Occurrence

    Sri Lanka (Ceylon), Myanmar (Burma), Madagascar, Germany, India, Tanzania, Brazil, United States, Mexico.

  • Appearance

    Orthoclase is an alkali feldspar occurring in a variety of colors, the most common being colorless.

  • Enhancements

    Orthoclase is not enhanced.

    More information on gemstone enhancements.

Orthoclase Varieties
Orthoclase Varieties