Ambitious smaller miners, such as South Africa's Petra Diamonds, are also looking to stick their picks in.

而那些雄心勃勃的较小的矿业公司，如南非的佩特拉钻石公司，也期望自己挖掘钻石。

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Petra Diamonds announced its discovery of what may very well be the largest blue diamond to ever be unearthed at the Cullinan mine in South Africa.

佩特拉钻石公司近日宣布，他们在南非库利南钻石矿发现了一颗很有可能是迄今为止最大的蓝钻石。

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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.

另外四颗钻石分别重58克拉、69.26克拉、82克拉和104克拉。

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Ambitious smaller miners, such as South Africa's Petra Diamonds, are also looking to stick their picks in.

ECONOMIST: Diamonds

Oryx intends to list on 13 June as part of its takeover by Petra Diamonds, a mining group listed on the Alternative Investment Market.

BBC: African diamond group to float