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;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The dash-dot-dash broken lines shown in the drawings illustrate the bounds of the claim and form no part of the claimed design. The dash-dash broken lines illustrate portion of the article of jewelry that form no part of the claimed design.