
Opals have an enchanting history. In fact, this colorful stone inspires strongest emotions in humans. Gemstone and jewelry connoisseurs either love Opal greatly or fear it. For Romans, Opal was a sign of good luck. Further, Roman Emperors had Opals encrusted in their crowns to ward off disease and evil eye. White Opals are most common with their milky white body. They are famous for their rainbow-like iridescence. Depending on its angle from which you are looking, you get to see a different color transformation, creating a crystal ball like effect.Ethiopian Opals are also found naturally in an opaque tan shade that often displays intense rainbow color flashes across its surface. Ethiopian crystal Opals look their best under strong sunlight and artificial lighting.