An unusual Renaissance Revival figural enamel and diamond bodice ornament, 19th century composite,

An unusual Renaissance Revival figural enamel and diamond bodice ornament, 19th century composite, possibly intended to resemble a ship's figurehead, designed as a bust wearing a foliate headband in green enamel set with a circular-cut diamond, the reverse later set with a green paste, the figure's face, shoulders and back applied with pink and white enamel en ronde bosse, with finely painted enamel details to the eyes and hair, the back tied with a ribbon bow applied with blue enamel, the front set with a scaled or feathered breast plate later applied with green enamel, sitting within a foliate mount applied with multicoloured enamel and set with rose-cut diamonds, in silver and gold, length 4.6cm, pin detached