Refined Art Nouveau silver necklace featuring a finely openwork lakescape with an abalone mother-of-pearl dragonfly, a probably natural baroque pearl (not tested) and a superb small opal cabochon with intense fire. The decoration is studded with baroque pearls, probably natural (untested), and pyrite. Signed A. VIALLE on the back. Period chain. Dimensions of pendant: 6.5 x 4 cm. Chain length: 47 cm Gross weight: 12.3 g.