A collection of jewellery

A collection of jewellery, comprising: a collar suspending a fringe of pear-shaped rose quartz pendants, inner circumference 38cm, Italian maker's mark, stamped 750; a pair of drop earrings set with polished blue chalcedony and rose quartz, accented with cultured pearls and brilliant-cut diamonds, hook fittings; a necklace composed of variously-shaped gold links, wooden hoops and spectacle-set links of oval rock crystal, amethyst and blue topaz, length 86cm, stamped 375, French import assay marks for 9ct gold; and a necklace composed of fluted rock crystal beads, spherical amethst beads and brushed gold beads, length 87cm