This undated image received from Sotheby's auction house on October 8, 2022 shows the Williamson Pink Star diamond, which was sold at auction in Hong Kong for nearly 58 million USD on October 7, setting a record for price per carat for any diamond or gemstone, according to auction house Sotheby's. - (Photo by Handout / Sotheby's / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / SOTHEBY'S - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE