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 ...

A diamond forged deep within Earth's interior held an unexpected discovery locked inside: a mineral never before seen in nature and one that cannot normally exist on the planet's surface.

Scientists estimated that the mineral formed 105 miles beneath the Earth’s surface. A single grain of rock lodged in a diamond contains a never-before-found mineral. And that newfound substance ...

The mineral – named davemaoite – provides a unique window into deep-Earth chemistry. Originally dug up in a mine in Orapa, Botswana, the diamond is about 4 millimetres wide and weighs 81 ...