A Renaissance-revival gold, enamel and gem-set pendant/necklace, by Carlo Giuliano

A Renaissance-revival gold, enamel and gem-set pendant/necklace, by Carlo Giuliano
The openwork pendant of fine scrolling gold with applied black and white piqué enamel detail, set to the centre with an oval mixed-cut green zircon and diamond highlights and supporting an articulated pearl drop, accompanied by two associated backchains each with a connector hook, connecting links deficient, circa 1860, lengths: pendant 6.2cm., backchains 20.0cm.
Pendant signed C.G