A collection of five gem-set rings

A collection of five gem-set rings, comprising: a five-stone diamond ring set with cushion-shaped diamonds, size J1/2; a ring set with two jadeite cabochons, size M1/2, stamped 14K; a sapphire and diamond cluster ring, size M1/2, stamped 18CT; an 18ct gold three-stone sapphire ring accented with brilliant-cut diamonds, size M1/2, British hallmarks, maker's mark for Cropp & Farr; and a gold ring set with a circular-cut smoky quartz, size N1/2, stamped 18K