A GROUP OF FOUR GEM-SET RINGS, The three-row sapphire and diamond ring, set with old brilliant-cut diamonds, one diamond deficient, stamped 18ct, ring size P; the five-stone diamond ring set with old brilliant-cut diamonds, maker's mark, stamped 18, ring size S; a three-stone diamond ring set with brilliant-cut diamonds, stamped 18ct, ring size L½; a five-stone ruby and diamond ring set with old brilliant-cut diamonds, stamped 18ct, ring size N; Total gross weight 13.6 grams (4)