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How big is an opal?

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Anonymous

13y ago
Updated: 8/17/2019

Opals vary in size. Some of the best opals are fist-sized, but generally they are much smaller. The world's largest opal to be found, to date, is the Olympic Australis, which is 280 mm long, 120 mm high and 115 mm wide. It weighs 17,000 carats (3450 grams).

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13y ago

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