Diamonds hitch a ride to Earth's surface inside a rare magma called kimberlite, but only if that magma stays buoyant.

A representation of the internal structure of the Earth. Credit: USGS "A diamond is forever." That iconic slogan, coined for a highly successful advertising campaign in the 1940s, sold the gemstones ...

The sparkle of a diamond hides an extraordinary journey from the depths of the Earth, a voyage that science is only beginning ...

kimberlite, a type of igneous rock, and new research has revealed how diamonds are transported without being carbonized when they rapidly rise from deep within the Earth and erupt to the surface. Why ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Western Australia’s Argyle mine was among nature’s preeminent treasure troves for nearly 40 years. At its peak, Argyle produced more colored diamonds than anywhere else on Earth and earned an ...

New simulations suggest that a 9-mile-thick layer of solid diamonds may lurk deep below the surface of Mercury. The gems almost certainly can't be mined for bling — but they may help solve some of the ...