Opalized snail shell from Coober Pedy, South Australia; one of the leading opal mines in the world. Also, read more on Coober Pedy. One of the hottest places in the world, yet residents live in honeycomb caves that stay nice and cool all day.
Black Opal is Australia’s national gemstone. Found in the Lightning Ridge area in northwestern New South Wales, black opals are natural, solid stones that absorb scattered white light, giving it brilliant spectral colors.
Rare Large Crystal Opal Mintabie, South Australia, Australia The opal deposits of Mintabie have long been depleted with no new production emerging. The present example was set aside many years ago by the miner who could not bear to part with it earlier.