A magnificent pair of diamond clip brooches, by Cartier, circa 1935. Photo Bonhams Each central old pear-shaped diamond, weighing either 4.63 carats or 4.77 carats, within a baguette-cut diamond frame with square-cut diamond highlight, bordered by pear-shaped...

The Bulgari Blue Diamond. Photo: Christie's Images Ltd 2010 . A two-stone colored diamond and diamond ring, by BulgarI. Set with a triangular-cut fancy vivid blue diamond, weighing approximately 10.95 carats, and a triangular-cut diamond, weighing approximately...