All about Opals, from the rainbow dazzle of the precious Australian opals like Lightning Ridge, Boulder Opal and Mintabie, to the flashy Ethiopian Welo Opals, to the rich colour of the Mexican fire opals, and the wonderful colour variation in more 'common' opal, from the soothing blues of Owyhee and Durango, to the soft pinks of Icecream Opal, and the juicy green of Madagascar Green Apple Opal.