WHAT: Called “The Sunrise Ruby,” the cushion-cut stone of almost 26 carats set between two shield-shaped diamonds of almost three carats each brought $30.3 million at Sotheby’s Geneva this month, ...
A 55.22-carat ruby has become both the largest and most valuable gem of its kind ever to sell at auction, netting $34.8 million on Thursday. The stone went under the hammer in New York in June, less ...