Obsidian is one of the strongest protection stones. It forms a shield against negativity.  It blocks psychic attacks and absorbs negative energies from the environment.  Obsidian draws out mental stress and tension.  It stimulates growth on all levels, urging exploration of the unknown and opening new horizons.  It also brings clarity to the mind and clears confusion.  Obsidian dissolves emotional blockages and ancient traumas while promoting compassion and strength.