The listing, ~100% Genuine Purple Rainbow Obsidian Gemstone Cabochon~ 22x30mm has ended.
This 22x30mm semi-precious natural volcanic glass is called Rainbow Obsidian. The name was given because not only is this black obsidian, but also it has different color sheens that appear on it. These colors may be purple, blue, green, pink, gold or a mix -usually in natural banding. It was mined, by hand, out of Northern California.