Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

Three diamond set rings, comprising a three stone diamond ring, claw set, to an 18ct gold shank, a three stone diamond boat-shaped ring, 18ct gold and platinum mounted and a three stone amethyst and diamond ring, 18ct gold and platinum mounted, ring sizes P, M and Q respectively. £500-700