An impressive diamond ring.Photo: Christie's Images Ltd. 2011 Set with an oval-cut diamond, weighing approximately 46.51 carats, flanked on either side by a pear-shaped diamond, weighing approximately 1.00 and 1.01 carats, mounted in platinum. Estimate...

Chrysoberyl brooch , probably Portuguese, second ahalf of the 18th century. photo Sotheby's Designed as a floral and foliate spray tied with a ribbon, set with foil backed cushion-, pear-shaped, oval and mixed-cut chrysoberyl, later brooch fitting, accompanied...

Attractive Sapphire and diamond ring, Faraone, circa 1970. photo courtesy Sothebys Centring on an octagonal sapphire weighing 12.76 carats, within a ballerina setting of baguette and tapered baguette diamonds, the shoulders set with similar stones, mounted...