A collection of jewels, including a mourning brooch and a patch box, 19th century

A collection of jewels, including a mourning brooch and a patch box, 19th century, comprising: a lozenge-shaped gold plaque centring on a carnelian and glass composite cameo of Apollo, within a filigree openwork border, circa 1810, 7.4 x 6.3cm; a gold necklace centring on a gold pendant with a painted sepia enamel portrait of Mars, to a later gold chain, length 40cm; a blue glass plaque with a scene of classical ruins in cut gold, within a border of pastes, 4.7 x 5.7cm, possibly composite, frame adapted from a shoe buckle; a wooden patch or toothpick case applied with the initial D beneath a viscount's coronet, opening to reveal a mirror and a piece of paper with the gilt crowned monogram of Queen Victoria, 6.1 x 2.2 x 1.1cm; a mourning brooch of navette outline, centring on an enamelled urn inscribed 'Grieve not she rests in peace', on a ground of hairwork, length 3cm, likely later adapted from a mourning ring; and a foliate gold plaque set with green pastes, 7.0 x 4.0cm