Art Deco diamond and onyx slim strap bracelet by Cartier, c.1920, with a line of round brilliant cut diamonds along the openwork middle, framed by calibre cut onyx and single cut diamonds alternating at the articulated link sections, mounted in platinum, signed 'CARTIER' and with serial number 6441544
Late 18th / early 19th century pear shaped emerald and diamond cluster ring, c.1800, the Colombian emerald of step cut and elongated outline, open set and inverted within a heart shaped border of old cut diamonds,