Get Black Obsidian Moon Wire Wrap Pendant A online from Agate Export at low price. Black Obsidian Stone is a powerful cleanser of psychic smog created within your aura, and is a strong psychic protection stone. Black Obsidian Stone 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 prophecy and may boost precognition.