Three items of early 19th century jewellery

Three items of early 19th century jewellery, including a gold mourning ring with central oval plaque depicting a young woman standing beside an urn on a pedestal in hair, with black paste-set border, in closed-back settings with engraved inscription dated 1818, size K, together with a diamond and paste-set Latin cross pendant brooch, set with rose-cut diamonds and four baguette-shaped diamonds to the closed-back silver setting, and a paste-set Greek cross pendant, closed-back gilt metal setting, 3.2cm