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

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

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 ...

Molten carbon can form into either diamond or graphite. A new study shows how graphite can sometimes form even under conditions that should lead to diamond. (Getty Images) The graphite found in your ...

Synthetic diamond research examines organic molecular interactions under the microscope. Scientists have long developed ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Strange hexagonal diamonds may have been jettisoned into space when a dwarf planet collided with ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A layer of diamonds ...