A Giuliano enamel and gem-set brooch

An enamel and gem-set brooch by Giuliano, the stylized feather-shaped brooch of pierced scroll-work decorated with black and white enamel, claw set with a cushion shaped peridot measuring approximately 9 x 8mm, and a similarly cut and set ruby measuring approximately 6 x 5 mm, decorated with cushion-shaped diamonds, signed with the monogram CG, overall measurements approximately 55 x 28 mm, circa 1865, gross weight 16.4 grams.