Add Yahoo as a preferred source to see more of our stories on Google. The discovery of the Lucara Diamond in August in the Karowe Mine in northeast Botswana rocked the jewelry industry, but few were ...

Diamonds are uniquely valuable due to their extreme hardness and exceptional thermal conductivity, making them the hardest known natural material, about 58 times harder than any other, according to ...

The National Union of Mineworkers (NUM) has called for the government to intervene as one of South Africa's biggest diamond mines enters business rescue.

The discovery of the Lucara Diamond in August in the Karowe Mine in northeast Botswana rocked the jewelry industry, but few were as moved by the historic find as Susan Jacques, the president and chief ...