The ornamental design for an article of jewelry, as shown and described.
FIG. 1 is a perspective view of an article of jewelry, showing my new design in a configuration of use;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a bottom perspective view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a back elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a left side elevation view thereof;
FIG. 8 is a top plan view thereof; and,
FIG. 9 is a bottom plan view thereof.
The broken lines in the drawings represent portions of the article of jewelry that form no part of the claimed design. The other broken lines in FIG. 1 represent environmental subject matter only and form no part of the claimed design.