A collection of six rings, 19th and early 20th century

A collection of six rings, 19th and early 20th century, comprising: a pearl and rose-cut diamond ring, size O, pearl untested; a child's gold ring set with a colourless paste, size D; a half hoop ring set with five graduated half pearls, size S1/2, pearls untested; a two-stone diamond ring, size V, stamped 18CT; a navette-shaped sapphire and diamond ring, size N, stamped 18CT; and a mourning ring set with seed pearls around a glazed panel of hairwork, size M1/2, pearls untested, each with fitted case