An antique pearl and diamond bow brooch, designed as a bow, the central old brilliant-cut diamond weighing approximately 0.50 carat, to the openwork plaque mounted with a series of graduated old brilliant-cut diamonds, suspending a baroque-shaped pearl measuring approximately 6.8 x 12.4 mm, adapted, mounted in silver and gold, pearl untested, diamonds approximately 3.50 carats total, width 8 cm