South African diamonds have revealed nickel-rich metallic inclusions, offering the first direct evidence of reactions predicted to occur deep in Earth’s mantle. The study shows how oxidized melts ...

A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that ...

Kempe and Weiss’s research marks a breakthrough, the first natural evidence of nickel-rich alloys at the depths long ...

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

These diamonds acted as “tiny time capsules,” preserving a rare snapshot of deep Earth processes. “This is a rare snapshot of mantle chemistry in action,” said Yaakov Weiss, the study’s lead author.

Earth's mantle is a restless, enigmatic engine that powers volcanism, recycles crust, and regulates the long-term evolution ...

The graphite found in your favorite pencil could have instead been the diamond your mother always wears. What made the difference? Researchers are finding out. How molten carbon crystallizes into ...

While diamonds continue to plunge in value due to lab-grown alternatives, these gemstones cannot be grown in a lab.