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 ...

A rare two-coloured diamond has been discovered in Botswana, in southern Africa. The rough stone is half-pink and ...

The Okavango Blue Diamond, a dazzling 20.46-carat stone, is more than just a beautiful jewel-it's practically a miracle of ...

Formed millions to billions of years ago, diamonds can shine light into the darkest and oldest parts of the Earth's mantle. The analysis of ancient, superdeep diamonds dug up from mines in Brazil and ...

Many a special diamond has been unearthed in Botswana, but this one is something else. A diamond split cleanly in two—one ...

Buying a diamond is an emotional moment. Whether it’s for an engagement ring, a Diwali gift, or simply a treat-yourself ...

Researchers have penned a new study that reveals the discovery of a rare mineral that forms under extremely high pressure and high temperature in Earth's mantle. The mineral that was found is called ...

De Beers and Endiama discover a new kimberlite deposit in Angola, the first in 30 years, changing the global diamond map.

A team of Chinese scientists may have cracked the secret behind the strange Canyon Diablo diamonds. Hexagonal in form rather than cubic, the process behind how these diamonds formed has, until now, ...

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 ...

A 37.4-carat pink-and-colorless diamond found in Botswana’s Karowe mine reveals a rare two-stage formation deep within ...