Square Prism Cube: Square x cube prism, smooth cut, transparent color, able to penetrate light and reflect rainbow colors, very suitable as decoration for ornaments Size: Optical prism cube include 1pc about 15mm(0.59 inch) Glass Material: The optical prism cube is made of glass, with a smooth surface, not easily broken, transparent color, and suitable for long time use RGB Optical Prism Cube: Light can easily pass through glass crystal prism, and you can manipulate it through refraction to create a kaleidoscope like pattern, making your decoration more attractive Wide Applications: Optical prism cube is widely used. It can not only be used as a decoration for bedrooms, study rooms, living rooms, offices and other places, but also as a photography prop to make your photos more charming