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 ...

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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 ...

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 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, ...

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 ...

The intense heat and pressure at the Earth's core, deep beneath the surface, is enough to make diamonds out of carbon, scientists say. Researchers from Arizona State University's School of Earth and ...

Provided you have ever been amazed by the shine of a diamond, then there must have been a moment when you questioned how it entered your jewelry box instead of remaining under the Earth’s surface.

A rare type of diamond may suggest that water can penetrate deeper into Earth's interior than scientists previously thought. Though more than 70% of our planet is covered with water, there is also ...

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 ...