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单词 Bristol Diamonds
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Bristol Diamonds

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Bristol Diamonds

Bristol Diamonds are not actually diamonds but quartz crystals found in geodes, geological rock formations which occur in dolomitic conglomerate found in the Avon Gorge in Bristol, England. Their origin lies in geological processes of the Triassic period, about 250 to 200 million years ago.

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更新时间:2025/6/18 13:42:45