Seven rings and two brooches, 19th century

One ring of lozenge outline set with a chalcedony cameo within a border of split pearls, size L, French warning mark; one set with rose-cut diamonds in a floral border of turquoise cabochons, size O; one set with a cabochon amethyst within a rose-cut diamond border, size G; one with a monogram over woven hair, beneath a rock crystal cabochon and ruby surround, size D; one with an oval amethyst set with the letter Z in rose-cut diamonds, size N; one with a carnelian cameo within a surround of rose-cut diamonds, size F; one of cluster design, set with a turquoise cabochon within a surround of rose-cut diamonds, size L, French import assay marks; one brooch designed as a four leaf clover set with sapphire cabochons within a frame of rose-cut diamonds; and one brooch with a painted portrait of a woman in profile, backed in mother of pearl, the frame set with split pearls and turquoise.