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While opal mining around the town had slumped in the early 1940s, it picked up after a local Aboriginal woman, Tottie Bryant, discovered a large deposit in 1945. [24] In August 1956 at the 'Eight Mile' opal field, the Olympic Australis opal was found approximately 30 feet below the ground. It is the largest and one of the most valuable opals ...
The Yowah opal field in the Shire of Paroo. The Yowah nut is a type of precious opal, found within the Yowah opal fields situated in Yowah, Shire of Paroo, South West Queensland, Australia since the latter part of the 19th century. [1] These opals are known for their distinctive nut-like shape, opalescent patterns, and vibrant colours.
After its discovery in 1946, the opal remained in Bartram's family until 2017, when it was sold to the South Australian Museum. [4] The opal was sold for A$500,000, despite its estimated market value of A$900,000, [3] [5] to ensure that it remained uncut.
The country is also a major producer of precious stones, being the world's largest producer of opal and is also one of the largest producers of diamond, ruby, sapphire and jade. In non-renewable energies, in 2020, the country was the 30th largest producer of oil in the world, extracting 351.1 thousand barrels/day. [16]
Australian opal has been cited as accounting for 95–97% of the world's supply of precious opal, [24] [25] with the state of South Australia accounting for 80% of the world's supply. [26] In 2012, Ethiopian opal production was estimated to be 14,000 kg (31,000 lb) by the United States Geological Survey. [ 27 ]
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Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal; Flame Queen Opal; Galaxy Opal; Halley's Comet Opal, the world's largest uncut black opal; Olympic Australis Opal, reported to be the largest and most valuable gem opal ever found
The opal was found at a depth of 9.1 metres (30 ft). The Olympic Australis opal was named in honor of the Olympic Games, which were being held in Melbourne in the year of the opal's discovery. It consists of 99% gem opal with an even colour throughout the stone, and has been left in a natural state, unpolished and uncut with blemishes. [4]
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