The ornamental design for jean jewelry, as shown and described herein.
FIG. 1 is a perspective view of jean jewelry showing an environmental view of our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a top edge view thereof;
FIG. 5 is a bottom edge view thereof;
FIG. 6 is a first side view thereof; and
FIG. 7 is a second side view thereof; and,
FIG. 8 is an oblique view thereof.
The broken line showing of FIG. 1 is for the purpose of illustrating the environment in which the article embodying the design is used and forms no part of the claimed design.