Black tourmaline, the stone of protection used for nurses doctors social workers by having this crystal with your with will assist strengthen your aura repel negative people and negative thoughts.
This crystal is also a little different as it turns the energy back around and sends it back to the people that send it to you.
Great for spiritual work too, watching/ protecting over you. Shahram work is also included in this crystal.
*Please note that none of the products available in the healing shop have, or claim to have, special powers, they are available only to assist and guide.