The ornamental design for a crystaltablelamp, as shown and described.
FIG. 1 is a front view of a crystal table lamp of the present invention. The back, left, and right views of the crystal table lamp are each identical to the front view.
FIG. 2 is a top view thereof.
FIG. 3 is a bottom view thereof.
FIG. 4 is a perspective view thereof; and,
FIG. 5 is another perspective view thereof.
The broken line showing of certain portions of the crystal table lamp is included for the purpose of illustration only and forms no part of the claimed design.