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 ...

Diamonds are the hardest mineral on Earth, useful in industry and sought after for their beauty. But for scientists, they ...

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 ...

Within a diamond hauled from deep beneath Earth's surface, scientists have discovered the first example of a never-before-seen mineral. Named davemaoite after prominent geophysicist Ho-kwang (Dave) ...

Tom Moses, executive vice president and chief research and laboratory officer for the Gemological Institute of America, discusses his experience examining the second-largest diamond ever discovered.

Scientists discover that a potential 'diamond factory' may have existed at Earth's core-mantle boundary for billions of years. Steel rusts by water and air on the Earth's surface. But what about deep ...

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 ...

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, ...