Sotheby's displays the startling "pink star" diamond in London, March 20, 2017, before it's auctioned in Hong Kong next month. The company says the gem should fetch more than $60 million when put on the auction block April 4, which would represent a record for a pink diamond sold at auction. It said the 59.60-carat gem is the largest flawless fancy pink diamond ever graded by the Gemological Institute of America. (Photo/Agencies)
