Black Tourmaline is a powerful and protective crystal. It is formed from the crystallization of magma deep within the Earth's crust and is known for its ability to absorb and transmute negative energies. This stone acts as a psychic shield, creating a barrier of protection around the wearer or the space it occupies, blocking out negativity and electromagnetic pollution. It is often used for grounding and anchoring, helping to bring a sense of stability and security in times of stress or upheaval.