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

An Arts and Crafts diamond set circular locket, the central glazed double sided compartment bordered by foliate border of whiplash design, set with rose-cut diamonds and spaced with oval, round or pear-cut stained green chalcedony cabochons, with diamond set bale above, gold and silver mounted, diameter of pendant 4cm. £200-300