AN ANTIQUE MICRO MOSAIC BROOCH

in 18ct gold, circa late 19th Century, set with a polished onyx plaque inlaid with vari-coloured tesserae to depict a Cavalier King Charles Spaniel, surrounded by a stylised border with engraved detailing, secured with a hinged pin clasp, no assay marks, c.4.8cm, (c.24.7g)