Black Tourmaline crystal is a powerful stone for protection against negative energy. It is also a strong spiritual grounding stone. It helps you to release stress. Black tourmaline is known to be one of the most effective and powerful stones that can heal and protect you physically, emotionally, mentally, and spiritually. It can protect you against accidents, misfortune, sickness, and everything that brings negativity or unhappiness. The Black Tourmaline crystal stone is also one of the most powerful minerals for absorbing electromagnetic radiation, which makes it excellent for placing near computers and other electronics.