A Renaissance Revival gem-set gold brooch with enamel decoration by Giuliano

A Renaissance Revival gem-set gold brooch with enamel decoration by Giuliano, centred with a circular cabochon moonstone with three cabochon rubies within an inverted triangle and with three further moonstones above and suspending ten graduated oval-shaped moonstones, with black white enamel decoration overall, signed C&AG, 4.4cm wide