A SMALL EARLY VICTORIAN GOLD-MOUNTED JEWELLED AMETHYST BROOCH with oblong amethyst centre in openwork rose-cut diamond frame and outer seed-pearl border, with safety chain, 2.5cm. wide; another, oval, with applied rose-cut diamond and seed-pearl forget-me-not in outer pearl border, both circa 1840, 3.0cm. wide, and a George IV oval amethyst brooch in pearl and seed-pearl outer border, circa 1830