A large blue diamond has been found in a South African mine which experts believe could reach up to £30m at auction.

The ultra-rare stone could fetch up to $40 million, signalling a bright spot for a diamond sector under pressure.

Sotheby’s next jewelry auction wants to help you enter your blue period. To be sure, the auction house’s High Jewelry Sale, taking place on Tuesday, May 13 in Geneva, will offer up a slew of gems ...

A rare blue diamond was discovered at South Africa’s Cullinan Mine, drawing global attention and highlighting the country’s ...