An amethyst and seed pearl pendant, early 20th century composite

An amethyst and seed pearl pendant, early 20th century composite, the pendant composed of a circular-cut amethyst suspending an oval amethyst from two seed pearl chains, set between four circular-cut diamonds in silver collet settings, within a border of half pearls, suspending a further oval amethyst pendant, to a later fine gold chain, necklace length 37cm, pendant length 6.5cm, fitted case