Black tourmaline is recognized by its deep inky color, lovely natural sheen, and trademark striations...and yet, its true beauty is more than meets the eye. Known as nature's energy shield, you couldn't possibly choose a better stone for use in protection and banishing of unwanted energy. Black tourmaline is widely used in rituals across a wide range of esoteric practices as a tool for grounding and rooting oneself in healing. The smaller pieces here are double-terminated, making them extra powerful for sending vibrations in both directions.