Group of Gem-set Jewels

Comprising: a ring set with an oval-cut ruby, within a double surround of old brilliant-cut and old cushion-shaped diamonds, circa 1910; a ring set with an oval-cut yellow sapphire within a brilliant-cut diamond border; a pair of pendent earrings, each briolette-cut amethyst with brilliant and single-cut diamond cap, suspended via a series of baguette and brilliant-cut diamonds; a pair of brilliant-cut diamond cluster earrings, each with removable surround.