Black Tourmaline can be used to both repel and protect against negativity. It is excellent for deflecting radiation energy. Tourmaline emits far-infrared radiation in the 4-14 micron wavelength. Electromagnetic radiation in the far-infrared range can boost the immune system and promote detoxification. It enhances one’s physical well-being by increasing physical vitality, emotional stability, and intellectual acuity. Black tourmaline is also an extremely strong spiritual grounding stone. Also known as Schorl, it encourages optimistic attitudes and good luck and happiness, regardless of the circumstances in which you find yourself.