An early 19th century pink stone and seed pearl cluster ring

An early 19th century pink stone and seed pearl cluster ring, the long oval-shaped pink stone is set within two borders of graduated seed pearls with closed-back curved mount and with foliate bifurcated shoulders and reeded shank, size N 1/2, a George III mourning ring centred with an oval-glazed locket applied with gold initials on plaited hair with five black enamel borders, memorial inscription to the reverse dated 1793, size S, and a revolving late 18th century mourning ring, the rectangular plaque with a black and white enamel inscription reading 'not lost but gone before', revolves to reveal an oval-shaped glazed locket containing plaited hair, with a three-section gold shank, size L