The ornamental design for an article of jewelry, as shown and described.
FIG. 1 is a front, bottom perspective view of an article of jewelry, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof; and,
FIG. 4 is a left side view thereof, wherein the right side view, the front view, and the rear view are identical thereto.
The dash-dot-dash lines in the drawings illustrate a boundary of the claim and form no part of the claimed design. The dash-dash lines in the drawings illustrate portions of the article of jewelry that form no part of the claimed design.