Red diamond

A 2,500-carat diamond was found, valued at $90 million

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.

Pink diamond sells for nearly $58 million in Hong Kong

A rare pink diamond has sold in Hong Kong for nearly $58 million, setting a record for price per carat paid at auction for any diamond or gemstone, according to Sotheby's.

The 11.15-carat Williamson Pink Star on Oct. 7 fetched HK$453.2 million ($57.7 million), the second-highest price paid at auction for any jewel, Sotheby's added.