A late 19th/early 20th century diamond and pearl set brooch, of openwork shield-shaped design with ribbon bow detail below, millegrain set throughout with graduated old brilliant and rose-cut diamonds, accented with three pearls and with pearl drop below, mounted in yellow and white precious metal, to detachable brooch fitting and with loops to attach chain necklace, pearls untested for origin, brooch width 27mm. £300-400