NATURAL PEARL, TREATED COLOUR CULTURED PEARL AND DIAMOND BROOCH, PETOCHI

NATURAL PEARL, TREATED COLOUR CULTURED PEARL AND DIAMOND BROOCH, PETOCHI
Drop-shaped natural pearl measuring approximately 10.55-12.40x20.50 mm, treated colour cultured pearl, old-cut diamonds, silver and gold, with detachable pendant, 1920s, 6.6 cm, signed Petochi
SSEF report: approximately 17 carats, drop-shaped saltwater natural pearl; 12.332 carats, beaded saltwater cultured pearl, artificial colour modification