A RUBY AND DIAMOND RING, the waved diamond-set front with a drop-shaped ruby surmounted by a circular diamond collet, Finger size P; a small rectangular-cut sapphire ring with diamond and baguette-cut diamond openwork shoulders circa 1925, Finger size K 1/2, and a small panel ring with French-cut sapphire four-stone centre between diamond four-stone lines, circa 1910