A group of gold and gem-set jewels, early 20th century, comprising: a gold locket pendant, decorated

A group of gold and gem-set jewels, early 20th century, comprising: a gold locket pendant, decorated with a star motif in blue enamel and seed pearls, length 3.7cm; a circular openwork pendant set with a circular-cut amethyst, length 4.2cm; a seed pearl and peridot pendant on a gold chain, pendant length 5.5cm, chain length 40cm; an aquamarine and seed pearl pendant, length 3.5cm; a seed pearl and blue paste brooch, length 4.6cm; and an amethyst and seed pearl pendant, length 4cm, all mounted in gold, pearls untested