An amethyst and diamond demi-parure

An amethyst and diamond demi-parure, circa 1900 and later, comprising: a pendant composed of a cushion-shaped amethyst suspending a pear-shaped amethyst, each within a lobed border of millegrain-set cushion-shaped and rose-cut diamonds, circa 1900, length 5cm; and a later pair of matching amethyst and diamond earrings, screw fittings, length 2.4cm