RAPAPORT... A 50.03-carat diamond sold for $2.7 million at a recent Sotheby’s digital auction, setting a record for the highest online price paid for a jewel.Sotheby’s offered the round, G-color, VVS2-clarity stone without reserve, estimating it at $2.5 million to $5 million. The company saw “fierce” competition for the diamond as soon as bidding opened, with 30 offers coming in from participants ...
