Seemingly contradictory materials are trapped together in two glittering diamonds from South Africa, shedding light on how ...

Two diamonds from South Africa’s Voorspoed mine provide a rare direct insight into the chemistry of Earth’s mantle. Although ...

A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that ...

Earth's mantle is a restless, enigmatic engine that powers volcanism, recycles crust, and regulates the long-term evolution ...

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, ...

On top of it, the marketplace for diamonds can be really confusing. There are grades of clarity and color that lead to an overall quality rating. And, of course, diamonds are very expensive. The ...

A French tourist accidentally finds a 7.46-carat diamond at the Crater of Diamonds (Arkansas) on January 11, 2024, public.

Despite being around since the 1950s, lab-grown diamonds have only recently exploded in popularity. Allied Market Research states that, in 2022, the global diamond market was valued at $100.4 billion ...

Two materials, lonsdaleite and wurtzite, have just been recognized as being harder than diamonds. Lonsdalite, similar to diamonds that its made from carbon, is formed during asteroid impacts, and is ...

A profoundly curious gem is up for auction. The pear-shaped jewel called "the Enigma," cut with 55 gleaming sides, is dark and cryptic. The fine art company Sotheby's calls the unusual diamond "one of ...