The ornamental design for an article of jewelry, as shown and described.
FIG. 1 is an environmental front elevational view of an article of jewelry showing my new design;
FIG. 2 is a front elevational view thereof; and,
FIG. 3 is a rear elevational view thereof.
The broken line showing of words in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.
It being understood that the broken line showing of words in FIG. 1 and a chain in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design.