Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the Earth from 1 billion to 3 billion years ago.

Even the most sophisticated techniques can not detect a difference between a flawless mined diamond and a flawless human-made diamond — both are “real” diamonds.

While lab-grown diamonds are marketed as a more ethical alternative, they’re typically made from fossil fuels. But Shearman and Wojno realized that they could work with captured carbon instead.

Man-made diamonds are also becoming popular as consumers are more aware and educated about them, said Dan Moran, a third-generation diamond expert and owner of LA-based fine jeweler Concierge ...

Nearly 1 in 4 engagement rings in 2021 featured a man-made center stone, not necessarily always a diamond.

Scratches made on natural diamond 111 face with man-made diamonds. A large number of scratches appear in a generally vertical direction down through the centre of the picture.

Danish jewellery maker Pandora plans to expand its lab-made diamonds product range after customers said they liked the concept but wanted more choice, its boss said on Thursday.

Scientists at Arizona State University have found that diamonds are made at the boundary between the Earth's core and the mantle.