Black Obsidean Stone Skull It is a powerfully defensive stone that forms a shield against negativity, blocking psychic attack and absorbing negative energies from the environment. It can help one to connect with one's deepest desires, and bring them to the surface where they can be manifested and materialized. Obsidian is in reality natural glass that is formed when hot lava is submerged in water. This is a strong grounding stone and is known as "the protector". It is said to "mirror one's soul. This stone brings about neutrality, dis-attachment and is grounding. It reduces fantasy and escapism. Absorbs and dissolves anger, criticism, fear, and therefore is protective. This unusual black stone absorbs darkness and converts it to white light energy.