Astrological sign(s): Scorpio
Mohs scale: 7–7.5
Spiritual uses: Black tourmaline grounds your spiritual practice into your everyday life. With this stone in hand, delve into the deeper aspects of your consciousness to uncover past lives.
Mental uses: Black tourmaline is helpful when you are feeling scattered and constantly being pulled off center.
Emotional uses: Black tourmaline helps to draw out dark negative emotions holding you back from living a happy life.
Physical uses: Black tourmaline offers protection from electromagnetic frequencies emitted by cell phones, computers, and other electronic devices.