This Art Nouveau plique-á-jour enamel turquoise and diamond necklace and hair comb sold at Sothebys for $29,875 on Dec 10, 2002. The comb is a triangular cluster set with oval-shaped turquoise cabochons. These are the flowers coming out of translucent yellow-orange enamel buds, which are then surrounded by green plique-á-jour enamel leaves. The matching necklace also features old-mine and rose-cut diamonds.