Rainbow Obsidian: A baroque cabochon of iridescent "rainbow obsidian." Black is the most common color of obsidian. However, it can also be brown, tan, or green. Rarely, obsidian can be blue, red, orange, or yellow. The colors are thought to be caused mainly by trace elements or inclusions.
Obsidian is used for protection, removing negativity, and many more things in crystal healing and energy work. Learn more about its metaphysical properties and healing lore. ... It is a very grounding stone, and very healing. Obsidian is also an excellent manifestation stone.