3D Crystal Ball A crystal ball is a crystal or glass ball believed by some people to aid in the performance of clairvoyance. It is sometimes known as a shew stone. Be amaze by this live Wallpaper and the special lighting effects in 3D. Options for transparent box 2 different light source Option to move light Option to change viewing angle and change background color. Option for Auto rotation with speed control, or manual control with finger swipe.