 南非发现了5颗超大钻石 Five large gemstones were found in South Africa and they weigh up to 507 carats.
 最大的一颗重达136克拉 These gemstones were found in a mine in Cape Town, South Africa. The largest stone is a 136-carat clean white octahedral one which is as large as an orange. And there are other four stones, weighing 58 carats, 69.26 carats, 82 carats and 104 carats respectively, said James Duncan , spokesperson of Petra Diamonds company.
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