Diamonds are famous for their strength, but scientists have long suspected that another form of diamond might be even harder. Evidence of this was gathered over the past sixty years in meteorite ...

Diamonds aren't always colorless; they can also be blue, yellow, green and even pink. But what makes these jewels come in varied hues? After forming, diamonds need to rise to the surface very quickly ...

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 ...

After decades of debate, researchers say that they have found the clearest evidence yet for this rare form of carbon.

The world’s largest source of natural diamonds — and of more than 90 percent of all natural pink diamonds found so far — may have formed due to the breakup of Earth’s first supercontinent, researchers ...

Scroll down to begin the experience. Botswana’s Jwaneng Mine sits on the edge of the Kalahari Desert, a vast expanse spanning much of southern Africa, its arid plains peppered with acacia trees and ...

To misquote a famous song, "Diamonds are industry's best friend." Cubic diamond is the hardest mineral on Earth and is used in everything from precision cutting tools to high-performance ...

Researchers have discovered a pattern where diamonds explode from deep beneath the Earth’s surface in huge, volcanic “fountains.” Diamonds form approximately 90 miles deep in the Earth’s crust and are ...

Diamonds in nature famously form under immense pressure in Earth’s mantle. But a new laboratory technique allows diamonds to skip the squeeze. The most common method for producing synthetic diamonds, ...

After decades of debates over the existence and properties of one of the world’s ...

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 ...