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

A diamond ring within outer diamond setting, ensuite, the central ring claw mounted with a marquise-cut diamond, within a cluster surround of small brilliants and further marquise-cut diamonds extending to the shoulders, together with a two part diamond ring, designed to incorporate the first ring, with graduating brilliants in V-shaped designs, precious metal mounted, ring size M. £300-500