A George III diamond and blue glass mourning ring, late 18th century

A George III diamond and blue glass mourning ring, late 18th century, of oval outline, centring on a funerary urn set with a pear-shaped diamond and smaller rose-cut diamonds, to a ground of blue glass over an engine-turned pattern, within an outer border of cushion-shaped diamonds, mounted in silver and gold, size L1/2, front measuring 3.0 x 1.9cm

Cf.: Ginny Redington Dawes and Olivia Collings, Georgian Jewellery: 1714-1830, Antique Collectors' Club, 2007, p.162 for a similar example