The ornamental design for a “jewelry organizer,” as shown and described.
FIG. 1 is a left side view of a jewelry organizer showing the two bottom trays pulled out from the top tray, the right side view being identical hereto;
FIG. 2 is a front view thereof; and,
FIG. 3 is a perspective view thereof with the top two trays pushed together on top of the bottom tray.
Features shown in broken lines in the drawings are not part of the claim.