3 mai 2014
An amethyst and diamond ring, by Van Cleef & Arpels
An amethyst and diamond ring, by Van Cleef & Arpels. Photo Christie's Image Ltd 2014. Centering upon a cabochon amethyst with four diamond corners and square-shaped hoop, ring size 6, with French assay mark for gold, in dark blue Van Cleef & Arpels case....