1. Sculpture comprising a mass of vitreous and mainly transparent material bounded by an arcuately curved surface, and a two dimensional diaphanous pellicle image embedded within said mass remote from said surface, portions of said image when viewed along a line of view passing through said arcuately curved surface being separated therealong, whereby as the line of view is changed, the relationship of said image portions changes in a relatively predictable manner to thereby create a three dimensional image effect.