Estate Betteridge Collection South Sea Pearl Necklace with Sapphire & Diamond Clasp

South Sea pearl necklace, composed of 31 South Sea pearls, strung on a hand-knotted silk cord, with a sapphire and diamond clasp, composed of a larger oval-shaped, cabochon cut sapphire surrounded by circular-cut diamonds with a baguette-cut sapphire trim, mounted in a pierced platinum setting.