A pair of amethyst cameo and seed pearl earrings, mid 19th century, each of cluster design, set with

A pair of amethyst cameo and seed pearl earrings, mid 19th century, each of cluster design, set with a carved amethyst cameo depicting a Bacchante, within a border of half seed pearls, mounted in gold, length 2.7cm, each cameo 1.9 x 1.5cm, later hook fittings