Experts at a laboratory in Botswana managed by the Gemological Institute of America recently examined an extraordinary ...

Diamonds are a mineral made up of a single element — carbon. Under extreme heat and pressure, carbon atoms bond, creating a crystal structure. Diamonds have the highest melting point of any substance ...

Provided you have ever been amazed by the shine of a diamond, then there must have been a moment when you questioned how it entered your jewelry box instead of remaining under the Earth’s surface.

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 ...

Formed millions to billions of years ago, diamonds can shine light into the darkest and oldest parts of the Earth's mantle. The analysis of ancient, superdeep diamonds dug up from mines in Brazil and ...

Buying a diamond is an emotional moment. Whether it’s for an engagement ring, a Diwali gift, or simply a treat-yourself ...

A 37.4-carat pink-and-colorless diamond found in Botswana’s Karowe mine reveals a rare two-stage formation deep within ...

A team of Chinese scientists may have cracked the secret behind the strange Canyon Diablo diamonds. Hexagonal in form rather than cubic, the process behind how these diamonds formed has, until now, ...

The intense heat and pressure at the Earth's core, deep beneath the surface, is enough to make diamonds out of carbon, scientists say. Researchers from Arizona State University's School of Earth and ...

Researchers from the Goethe University in Frankfurt have analyzed a rare diamond that formed 660 kilometers (410.1 miles) below the Earth's surface and was sourced from Botswana, Africa. At this depth ...

An 'astounding' half-pink jewel, weighing an 'astounding' 37.41 carats (7.5g), has been unearthed in Botswana.

Researchers have discovered a pattern where diamonds explode from deep beneath the Earth’s surface in huge, volcanic “fountains.” Diamonds form approximately 90 miles deep in the Earth’s crust and are ...