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The world's largest and most valuable gem opal "Olympic Australis" was found in August 1956 at the "Eight Mile" opal field in Coober Pedy. It weighs 17,000 carats (3.4 kg; 7.5 lb) and is 11 inches (280 mm) long, with a height of 4 + 3 ⁄ 4 in (120 mm) and a width of 4 + 1 ⁄ 2 in (110 mm).
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
Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ...
More and more gold mines are being located, such as in the Afar region and in the Konso woreda in south western Ethiopia. [8] On 30 August 2012 it was announced that British firm Nyota Minerals was about to become the first foreign company to receive a mining licence to extract gold from an estimated resource of 52 tonnes in western Ethiopia. [9]
As an opal dealer I deal with both Australian and Ethiopian Opals. It is my understanding that Australian Opal is sedimentary and Ethiopian Opal is volcanic. A discussion of the formation of different types of opals should be included. — Preceding unsigned comment added by Rinda Edgmarbou (talk • contribs) 02:00, 25 October 2019 (UTC)
Opalite is a trade name for synthetic opalescent glass and various opal and moonstone simulants. Other names for this glass product include argenon, sea opal, opal moonstone, and other similar names. [1] [2] It is also used to promote impure varieties of variously colored common opal. [1]
The economy of Ethiopia remained very traditional until the later 20th century, although Ethiopia—unlike most sub-Saharan countries—had maintained trade and contacts with the outside world for centuries. Since ancient times, Ethiopian traders exchanged gold, ivory, musk, and wild animal skins for salt and luxury goods, such as silk and ...
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).