The ornamental design for jewellery, as shown and described.
FIG. 1 : Perspective
FIG. 2 : Front
FIG. 3 : Back
FIG. 4 : Left
FIG. 5 : Right
FIG. 6 : Bottom
FIG. 7 : Top
The parts shown in broken lines form no part of the claimed designs; the thin lines on the articles show a three-dimensional shape of the article surface.