A collection of gem-set jewellery

A collection of gem-set jewellery, 19th century and later, comprising: a large cabochon moonstone and hessonite garnet brooch, a gilt metal, onyx and carnelian brooch; a gold bar brooch set with cabochon garnets and rose-cut diamonds; a gold bar brooch set with a cabochon opal; a gold ring set with an opal doublet; a 9ct gold and moss agate brooch, British hallmarks; a 9ct gold and carved nephrite brooch, British hallmarks; a 9ct and white enamel Yorkish rose pendant, British hallmarks; a gilt metal and banded onyx pendant; a brooch set with rose-cut and cabochon garnets; a pair of banded onyx cufflinks, one back fitting deficient; and three drop earrings set with aventurine quartz