A diamond set turtle brooch

An antique diamond set turtle brooch, the head, body, legs and tail set throughout with rose-cut diamonds, with the largest to the centre, estimated to weigh a total of approximatly two carats, the eyes set with rubies, all in silver to a gold mount with pin and catch brooch fitting, overall dimensions 28 x 18mm, circa 1880s, gross weight 5.8 grams