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.
GEMS Opal Necklace With Demantoid Garnet Accents. Necklace By Louis Comfort Tiffany. Black Opal From Australia's Lightening Ridge. Demantoid Garnet Accents From Russia. Janet Annenberg Hooker Hall Of Geology, Gems, And Minerals.