ns one of the few truly baffling mysteries among New York’s moneyed world. People know snippets, but few know the whole. “He’s very enigmatic,” says Rosa Monckton, the former C.E.O. of Tiffany & Co. in the U.K. and a close friend since the early 1980s. “You think you know him and then you peel off another ring

ns one of the few truly baffling mysteries among New York’s moneyed world. People know snippets, but few know the whole. “He’s very enigmatic,” says Rosa Monckton, the former C.E.O. of Tiffany & Co. in the U.K. and a close friend since the early 1980s. “You think you know him and then you peel off another ring