It is thought that black Obsidian is a powerful cleanser of psychic smog created within your aura, and is a strong psychic protection stone. This stone has powerful metaphysical properties that will help to shield you against negativity. The energy of these stones may stimulate the gift of prophesy. 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. It alleviates mental tension and stress. It stimulates growth on every level, urging exploration of the unknown and opening new horizons. Obsidian clears confusion and offers clarity and helps you to know who you truly are. Obsidian dissolves emotional blockages and ancient traumas. Promotes qualities of compassion and strength. Great for jewelry, medicine or amulet bags, or carry with you. Picked at random, each stone is a minimum of 14mm. I bought out a metaphysical store many years ago, and these were part of the many treasures included. I was not given a location where they were found, and I cannot obtain more. Sold per 2, undrilled. NOTE: If you are buying more than one item or lot, I will figure out actual shipping based on weight and refund you any difference.