Black obsidian meaning

Black Obsidian is a powerful crystal for protection, helping to clear the build-up of psychic smog within your aura by acting as a psychic vacuum cleaner.  It protects and cleanses your aura of disharmony, negative attachments, old patterns, and negative emotions, helping to unearth anything standing in the way of your personal and spiritual growth.  You can use the black obsidian properties for root chakra healing and grounding.

this is just the meaning you do not get the crystal