Georgian Brazilian Topaz, Pearl and Gold Cluster Brooch, Circa 1820

A Georgian, Brazilian topaz, pearl and gold cluster brooch, with a faceted, cushion shaped topaz, in a rub over setting, with grains, with a border of sixteen, natural, half pearls, in cut down settings, mounted in gold, circa 1820, with later inventory mark 4346, with a pin and hook catch, in a Harvey and Gore case.