A platinum Art Deco plaque brooch pavé set with old brilliant and single cut diamonds, in the middle a silver applique of many curls overall decorated with black enamel and with three old brilliant cut collet set diamonds. Total estimated mounted diamond weight: 8.20 ct. Verso with fourteen carat white gold brooch pin with trombone catch. With later safety chain. Made ca 1920.
75,6 x 32,7 mm.