Description This item is a in the shape of cube. White light coming in from one side gets split into three colors, each exiting from a different side of the cube. Mine looks almost perfect to the naked eye, only under magnification are some insignificant flaws visible, and those only along the outer edges. Suitable for non-professionals to make some experiments for explaining the basic theory of light. Feature - Color: As shown. - Material: Glass. - Size: 2.3x2.3x2.3cm. - Can be used as teaching tools or research tools and decorations. - It may improve children's interest of natural light and help them to discover some interesting phenomena. - Children can get the initial experience of the refraction of light perception and stimulate their curiosity. - A necessary equipment for science class of kindergarten, primary school , junior high school and high school. - Note: This item does not fit for projector, please do not put it into projector to replace the original.Package list: 1 x Cube