Black Tourmaline Crystal DT Point Pendant - Charged By Psychic Sasha Bonasin. This amazingly powerful crystal is set in Sterling Silver. Black Tourmaline is one of the most powerful crystals when it comes to protection against all sorts of negative energies, evil eye, psychic attacks, stress, anxiety, fear. It deflects and repels negative energy. It protects against radiation and ill wishing. It grounds spiritual energy, increases physical vitality. Black Tourmaline also protects against debilitating disease.