Obsidian is a natural, volcanic glass. It is a powerful crystal for protection, helping to clear the buildup of psychic smog within your aura. A bodyguard to your soul, the Obsidian stone also protects you from shadow traits -- fear, anxiety, addiction, and anger by acting as a mirror to your inner self. Black Obsidian also resonates with the root chakra as it aids with grounding and connecting to the Earth.