Black Obsidian is a powerful volcanic glass formed from rapidly cooled lava. This crystal is known for its intense energy and protective properties. Black Obsidian is often used for spiritual cleansing, grounding and shielding against negativity. It also acts as a psychic vacuum cleaner, absorbing and dispelling negative energies from the environment and the aura. It also serves as a mirror to one's inner self, bringing subconscious patterns and issues to the surface for healing and transformation.