Because I have examples of both styles of glass beads with a shou design - the blue glass ones that appear to have been engraved to a standard pattern, such as Anne showed, and the more 3 dimensional ones [such as yours] with the cut "slashes" surrounding the central shou character circle.

The latter cutting style seem to be pretty definitely Chinese - have never seen this molded. The Chinese, of course, are known for using lapidary techniques on glass as if it were just another type of stone.