A TURQUOISE RING, A KNOT RING AND A RING MOUNT WITH A LOOSE DIAMOND (4)

The 9ct gold and marquise shaped turquoise single stone ring with open shoulders, London 2003, size O, weight 2 grams, the 9ct gold knot ring, London 1978, size L½, weight 2 grams and a solitaire ring mount with a loose old cut diamond, indistinct mark, size N½, weight 0.7 grams