Miners have unearthed a rare, two-colored natural diamond in Botswana — and experts say it likely formed in two stages. The diamond is half pink, half colorless. It measures about 1 by 0.63 by 0.57 ...

Add Yahoo as a preferred source to see more of our stories on Google. Miners have unearthed a rare, two-colored natural diamond in Botswana — and experts say it likely formed in two stages. The ...