An Art Nouveau Yellow Gold, Pearl, Diamond and Enamel Convertible Lavalier Necklace, Bippart, Griscom & Osborn, consisting of a central openwork cattail motif pendant containing 10 old mine cut diamonds weighing approximately 0.20 carat total and one baroque pearl (origin not tested) measuring approximately 7.05 x 5.78 x 4.19 mm, the pendant suspended from a removeable cable link chain containing seven seed pearls, together with a removeable brooch fitting.Stamp: 14K (maker's mark for Bippart, Griscom & Osborn). 7.40 dwts.