Newly discovered mineral, named davemaoite, was found encased within a diamond.

Researchers thought the mineral was impossible to find on Earth's surface.

The rare mineral, long hypothesized but never seen, was recovered from a diamond that emerged from the Earth's lower mantle.

Scientists thought they might never find a sample of the elusive mineral.

In a major discovery, mineralogists identified a new mineral in a diamond mined from about 410 miles (660 km) below the surface of the earth in Botswana.

A group of scientists recently discovered a mineral inside a diamond taken from the depths of the earth for the first time.

Scientists have discovered the first instance of a never-before-seen mineral inside a diamond pulled from deep down the Earth's surface.

This mineral, that can only form under high pressure and high temperatures in Earth's mantle, was never seen before until scientists discovered a sample of it trapped in a diamond.

A diamond discovered deep beneath Earth’s surface contains a mineral that has never been found before on our planet.

Ancient diamond boulderfrom Botswana has black spots which are apparently a type of mineral that has never been seen before. The mineral, called davemaoite, is a unique window for scientists to see rock chemistry from the depths of the Earth.

A new mineral has been discovered deep inside Earth's mantle, wrapped inside a diamond. The never-before-seen mineral sheds light on the unexplored secrets that remain hidden in Earth's different layers.

Externally, the Botswana diamond is relatively unspectacular. But its interior allows conclusions to be drawn about geophysics deep inside the earth.