A FINE GEORGE IV JEWELLED AND GOLD-MOUNTED GREY CHALCEDONY MALTESE CROSS PENDANT, the ruby and half-pearl square cluster centre on a matted and engraved green gold foliage cruciform ground with four emerald collets at the cardinal points, the glazed and plaited hair reverse with yellow gold cannetille surround and beaded spandrels, with repoussé bead suspension loop, circa 1825, in fitted case