Crystals

A few days ago, 52-year-old Lucas Ncipe, assistant general manager of the Canadian diamond mining company Lucara, received a phone call from one of his engineers working at the Karowe mine in Botswana. “We found something incredible,” was the phrase he heard. He almost dropped the phone when he realized what it was about: the second-largest diamond in the world, weighing 2,492 carats.

The European Union has opened two investigations into whether two Chinese bidders benefited excessively from subsidies in their offers in a public tender for a solar power park in Romania, the European Commision said on Wednesday.

A rare rough ruby dubbed one of the world's biggest has gone on display for the first time ahead of an auction in the Gulf emirate of Dubai.

The 8,400-carat stone, nicknamed Burj Alhamal and weighing 2.8 kilograms, was mined in Tanzania and made its debut at a Dubai hotel on Friday as part of SJ Gold and Diamond's Callisto collection.

"The Enigma," the world's largest known cut diamond at 555 carats, went under the hammer in London on Feb. 9 for 3.16 million British pounds ($4.3 million, 3.8 million euros) having recently gone on display for the first time.

The rare black, or carbanado, diamond is believed to have been created when a meteorite or an asteroid hit Earth more than 2.6 billion years ago.

An x-ray scan at the hospital showed that the ring with a 2.5-carat diamond was still in Campbell's stomach.

Scientists just unearthed an eye-watering hoard of diamonds, so valuable it would completely destroy the world's economy. The scientists reckon there's a quadrillion tonnes of diamond buried in the 'cratonic roots' in continents. There's just one, tiny, catch: the treasure trove is buried 100 miles down, deeper than any drill has ever penetrated, according to MIT researchers.