Pair of 18 Karat Gold, Platinum, Mystery-Set Ruby and Diamond Leaf Earclips, Van Cleef & Arpels, France, 1966. photo Sotheby's The leaves mystery-set with calibré-cut rubies, the central stem set with baguette diamonds, signed Van Cleef & Arpels, numbered...

An emerald and diamond necklace. Photo: Christie's Images Ltd 2010 Designed as a graduated series of cushion-cut emeralds, each within a circular-cut diamond surround, spaced by collet-set diamonds, to the circular-cut diamond clasp, mounted in platinum,...