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| Chunk of raw garnet |
#jewelleryfacts365 189/365 Opal fact
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 (3450 g) and is 11 in (280 mm) long, with a height of 4.75 in (121 mm) and a width of 4.5 in (110 mm).
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| "Olympic Australis" |
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