A collection of jewels

A collection of jewels, comprising: six rings, including an 18ct white gold diamond cluster ring, British hallmarks; a turquoise and half pearl cluster ring; a cubic zirconia ring, a sapphire and diamond seven stone ring, one sapphire deficient; a ruby and diamond seven-stone ring; and an amethyst and diamond cluster ring, each mounted in gold, sizes J1/2-Q1/2; together with three bar brooches, one set with pearls, French assay marks; one of curb chain design; and one set with amethysts, each mounted in gold, longest 5.5cm; and an agate cabochon, 4 x 3cm, pearls untested