Obsidian is truth-enhancing.  A strongly protective stone, it forms a shield against negativity.  It blocks psychic attack 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.  This stone brings clarity to the mind and clears confusion., helping you to know who you truly are.  Obsidian dissolves emotional blockages and ancient traumas and promotes qualities of compassion and strength. Obsidian aids the digestion and detoxifies the insides. It reduces arthritis pain, joint problems, and cramps.