Rare 59 carat pink diamond on display before going up for auction

Sotheby's is displaying the startling "pink star" diamond in London before it's auctioned in Hong Kong next month.The company says the gem should fetch more than $60 million when put on the block April 4, which would represent a record for a pink diamond sold at auction.It said Monday the 59.60-carat gem is the largest flawless fancy pink diamond ever graded by the Gemological Institute of America.
Sotheby's jewelry division chief David Bennett said that the gem's size and color "surpassed any k