Group of five gem and diamond rings 1. Set with triangular-cut diamonds and carre-cut blue sapphires, Italian registry marks, 18ct gold, ring size K, 2. Centrally set with an emerald cabochon to brilliant-cut diamond shoulders, 18ct gold, ring size O, 3. The heart shaped glazed panel framed with brilliant-cut diamonds, 18ct gold, ring size K, 4. Set with baguette-cut diamonds, 18ct gold, ring size L, 5. Designed as an infinity symbol set with brilliant-cut diamonds, Italian registry marks, 18ct gold, ring size N, gross weight 22.4gm.