The ornamental design for a jewelryelement, as shown and described.
1. Jewelry element
1.1 : Perspective
1.2 : Back
1.3 : Front
1.4 : Bottom
1.5 : Top
1.6 : Right
1.7 : Left
Representation 1.1 is a perspective view of the jewelry element; representation 1.2 is a rear view of the jewelry element; representation 1.3 is a front view of the jewelry element; representation 1.4 is a bottom view of the jewelry element; representation 1.5 is a top view of the jewelry element; representation 1.6 is a right-hand side view of the jewelry element; representation 1.7 is a left-hand side view of the jewelry element;.