we call tourmaline "electric stone." It has internal electrodes. And when the crystal is pressured, or the temperature is changed, Tourmaline generates a voltage (0.6V) and electric charge (0.06mA). For this effect, moisture in air is decomposed into TOURMALINE STONE hydroxyl ions (negative ions (-)). Tourmaline can generate negative ions and far infrared (FIR) rays. Brown Tourmaline (Dravide) is an excellent grounding stone, clearing and opening the earth chakra and the grounding cord holding the physical body in incarnation. It clears the aura, aligns the etheric body and protects it. Encouraging community spirit and social commitment, Brown Tourmaline makes one feel comfortable in a large group. This stone heals dysfunctional family relationships and strengthens empathy. Brown Tourmaline is pragmatic and promotes creativity. In healing, Brown Tourmaline treats intestinal disorders and skin diseases, and stimulates regeneration in the whole body.