Four items of early-mid 19th century jewellery

Four items of early-mid 19th century jewellery, including a pansy spray brooch set with two pear-shaped citrines and three pear-shaped amethysts in textured gold, 3.2cm, together with a pansy brooch set with pear-shaped amethysts and citrines in closed-back settings within the ornate gilt- metal cannetille surround, 2.2cm, a circular gem-set gold locket pendant, the central convex citrine applied with a turquoise forget-me-knot spray within a surround of circular-cut amethysts, glazed compartment to reverse, 2.6cm, a pink topaz and seed pearl bar brooch, set with circular pink topaz in gold, 3.7cm wide