The Andamooka Queen's Opal: World Famous Opals - Australian Gemstones & Appraisals Magazine. In 1954, an extensive search was announced by the South Australian Government for the finest opal ever found at the South Australian opal fields. Queen Elizabeth II would be presented with the opal on the occasion of her first visit to Australia. Altmann & Cherny submitted an outstanding piece of rough opal which had been mined at Andamooka.
AN ART DECO BLACK OPAL AND DIAMOND PARURE Comprising a necklace, ear pendants and ring, the necklace designed as a series of polished opal panels interspersed with millegrain-set circular-cut diamond openwork links to the similarly-set cluster clasp, together with earrings of matching design and oval opal panel ring with geometric baguette-cut diamond surround, circa 1930 | Christie's