Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. Obsidian is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth. Obsidian is truth-enhancing. A strongly protective stone, it forms a shield against negativity. It blocks psychic attacks and absorbs negative energies from the environment. Said to help aid in mental stress and tension. It stimulates growth on all levels, urging exploration of the unknown and opening new horizons. Brings clarity to the mind and clears confusion. Dissolves emotional blockages and ancient traumas. Promotes qualities of compassion and strength.