The ornamental design for jewelry chain, as shown and described.
FIG. 1 is a partial front perspective view of a jewelry chain showing my
new design, wherein the design is embodied as a necklace, it being
understood that the broken lines indicate the continuity of the chain;
FIG. 2 is a rear perspective view of FIG. 1;
FIG. 3 is a perspective view of a jewelry chain showing a second embodiment
of my new design, wherein the design is embodied as a bracelet;
FIG. 4 is a perspective view of FIG. 3 shown in an open position; and,
FIG. 5 is a top plan view of FIG. 3 shown in an extended position.