When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The world's largest, most valuable diamonds may be born in pockets of liquid metal located deep ...
Most diamonds are made of carbon recycled over and over again between Earth’s surface and its crust. But diamonds with the deepest origins — such as the famed Hope Diamond — are made of carbon from a ...
A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that form in completely opposing chemical environments—a combination so unusual ...
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