Healing Crystals India Handcrafted Large Multi Stone Spiritual Healing Pyramid for Reiki, Meditation, Balancing, Protection, Yoga & Positive Energy Generator, Black Its a Healing Crystals India Product which include authenticity certificate, free 135 pages E-book about crystal healing by Abhishek Pandit on request. Stand is not in offer. Protection: It is protective against dark energy and should be placed in any part of the house (or wherever) that feels negative. Amethyst is also protective against technological pollution wherever it occurs. Black Tourmaline is also a powerful grounding stone, electrical in nature, providing a connection between Earth and the human spirit Work: It will help soothe anger and impatience and prevent you from becoming anxious. Return is not accepted after 48 hours of delivery. Black Tourmaline stone will help you to release stress, and as this health problem is so widespread these days, we could all benefit from having a piece of this crystal nearby.