When I saw an opal gemstone for the first time it blew me away. In the Middle Ages, opal was regarded as a stone that could bring great luck because it was believed to possess all the virtues of each gemstone whose color was represented in the color spectrum of the opal. It is also considered to be the birthstone for those lucky enough to be born in October. White and green opal are the most common but precious opal ranges from clear through white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black.
Most opal gemstones contain around 6% – 10% of water.
This one looks like Superman’s Kryptonite.