The ornamental design for a wearablejewelrycover, as shown and described.
FIG. 1 is a perspective view of a wearable jewelry cover of my new design, shown being worn on a finger of a hand;
FIG. 2 is a front elevation view thereof, wherein the back view is the same as the front view; and,
FIG. 3 is a right side elevation view thereof, wherein the left side view is the same as the right side view.
The broken lines showing the hand illustrate environmental subject matter and form no part of the claimed invention. The broken lines within the bounds of the claimed design represent stitching that forms a part of the claimed design.