Opalis classified as an organic gemstone Opals exhibits a range of colors and patterns, making them highly valued in jewelry. Opal Collection 6/10 Mohs ScaleHardness See all stones Opal isn’t a color. It’s shifting flashes of fire, blue, green, and gold, can’t be replicated by any other gemstone. Provenance: Australia (Lightning Ridge, Coober Pedy and Queensland), Ethiopia and Mexico. Why Wear Opal? Because nothing else looks like it.It signals taste, not trend. It’s light, elegant, and expressive. Go Back