7 avril 2014
18 karat white gold, sapphire, diamond, rock crystal and enamel brooch, René Boivin, France
18 karat white gold, sapphire, diamond, rock crystal and enamel brooch, René Boivin, France. Photo Sotheby's Of geometric design, centering a row of six cushion-cut multi-colored sapphires weighing approximately 10.90 carats, flanked by rows set with...