Philippe Wolfers for Wolfers Freres 22k Swan Pendant Necklace. Exceptional art nouveau plique a jour figural swan pendant with inset ruby eye 3''. It has a grey natural 9mm pearl drop with three 1mm mine cut diamonds. Top is set with a 3.5x2.5mm emerald cut ruby. It comes on a 16'' link chain 3mm (possibly original). No visible markings on chain or pendant. Excellent condition with no cracking to enamel. It weighs 28.4 grams. A similar example can be seen in the Rijksmuseum in Amsterdam.