Features 1. Material: The square cube prism is made of excellent optical glass, durable and clear, textured, with better refraction and clear reflection. 2. Unique Craftsmanship: The glass prism adopts a six-sided polishing process design, exquisite and beautiful, the same environment, different angles, will show completely different color performance. 3. Portable Design: The glass prism is small, so you can easily hold it in front of the camera lens and take special photos. Bring it with you and it won't take up space. 4. Functions: Glass prisms are used for the appreciation of beautiful optics and the synthesis of experimental light during play. They are used to divide the light beam into different spectral components that are displayed in rainbow colors. 5. Wide Application: The glass prisms can be used for teaching light spectrum physics or research tools, and can also be used for decoration and photography, which can provide good filter effects. Creative gift for children for physics spectrum learning. Specification Material: Glass Color: Multicolor Size: 7 x 7 mm, 10 x 10 mm, 12.7 x 12.7 mm, 18 x 18 mm, 23 x 23 mm, 25 x 25 mm Weight: 17 g, 22 g, 27 g, 32 g, 37 g Package includes: 1x cubes