Seemingly contradictory materials are trapped together in two glittering diamonds from South Africa, shedding light on how ...

The discovery of two diamonds originating from the depths of the Earth's mantle reveals a chemical coexistence that ...

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 ...

Botswana's Karowe mine just produced a record-breaking 2,492-carat diamond, the largest unearthed in over a century.

While studying diamonds inside an ancient meteorite, scientists have found a strange, interwoven microscopic structure that has never been seen before. The structure, an interlocking form of graphite ...

Imagine an ordinary carbon atom that’s replaced with a tightly packed pyramid of four carbon atoms. Inspired by Egypt’s pyramids, this elegant arrangement has ...