South Africa, Botswana and several southern African peers that built much of their prosperity on diamonds are scrambling for alternatives as cheaper, lab-grown stones threaten their economies. Diamond ...

GABORONE, Botswana(AP) — In a village outside Botswana ’s capital, Keorapetse Koko sat on an aging couch in her sparsely furnished home, stunned that a career — and an entire nation’s economy — built ...

A rare blue diamond was on display Tuesday at an exhibition of $100 million worth of the world’s rarest diamonds in the United Arab Emirates’ capital, Abu Dhabi. The eight diamonds on display at the ...