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 ...

Molten carbon can crystallize into diamond or graphite, but it has been difficult to study this process. New simulations show that graphite can sometimes "hijack" the pathway that would lead to ...

The discovery of two diamonds originating from the depths of the Earth's mantle reveals a chemical coexistence that ...

More than 75,000 diamonds have been unearthed at the Crater of Diamonds State Park since the first diamonds were discovered ...

Synthetic diamond research examines organic molecular interactions under the microscope. Scientists have long developed different techniques to produce artificial diamonds, but a new method from ...

"We calculate that, given the new estimate of the pressure at the mantle-core boundary, and knowing that Mercury is a carbon-rich planet, the carbon-bearing mineral that would form at the interface ...

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 ...