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The Halley's Comet Opal is a very fine specimen, with few flaws or blemishes and a large green and orange 1.6 cm (0.63 in) thick color bar which goes through the opal. Formed about 20 million years ago, it is an example of a nobby, which is a natural lump-shaped opal found only at Lightning Ridge. [2] As of 2006 it was for sale at $1.2 million. [3]
It is known for its bone collection, art and graffiti, and messages written by tourists. The dugout is featured as a set in movies, including Pitch Black and Mad Max Beyond Thunderdome. [40] [41] The Umoona Opal Mine and Museum is a popular attraction. [42] The annual Coober Pedy Opal Festival takes place in June, with the 34th edition ...
The opal is just under 5,000 carats; roughly equivalent in size to two cricket balls. [1] Although rough-cut, it is polished on two sides. [3]Due to the evaporation of an inland sea several million years ago, South Australia is one of the few places on Earth where opals of this size can be created.
The Olympic Australis opal is the largest and most valuable opal yet found (as of 1961) [1] and was valued at A$2,500,000 in 1997. [2] It was found in 1956 at the 'Eight Mile' opal field near the town of Coober Pedy in South Australia. [3] The opal was found at a depth of 9.1 metres (30 ft).
The Flame Queen Opal is perhaps the best-known example of "eye-of-opal", an eye-like effect created when opal in-fills a cavity. [ 1 ] The Flame Queen's flat central raised dome flashes red or gold depending on the angle of view, and is surrounded by a band of deep blue-green, giving the stone an appearance somewhat like that of a fried egg.
Outback Opal Hunters is an Australian factual television show which follows opal miners across various sites in the Australian states of New South Wales, Queensland, South Australia and Western Australia. The series is produced by Prospero Productions and began on the Discovery Channel on 8 February 2018. The series has been a ratings success ...