Business News World's largest pink diamond expected to fetch up to $30 million at auction October 13, 2017 johorbiznet Johor News World’s largest pink diamond expected to fetch up to $30 million at auction Reuters World’s largest pink diamond to be auctioned by Sotheby’s; expected to fetch $30m International Business Times, Singapore Edition A Giant Pink Diamond Is Up for Sale TownandCountrymag.com Full coverage Source: Business News Feed