The ornamental design for jewellery, as shown and described.
1. Jewellery
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Bottom
1.7 : Top
Design 1: 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.