Obsidian is formed after the volcanic erosion takes place and the lava gets
cooled. Generally obsidian is considered as a gemstone in other point of view by
common people. The reason may be its properties of curing some of the problems,
especially rainbow obsidian blocks the negative thoughts and make the person gem
among people society. This obsidian is related to the underworld Greek god and
also hidden treasure keeper. Though it is called as grounding stone, also contains
fiery element. Particularly meditation people state this rainbow obsidian to be
powerful.