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 in size, so you can easily hold it in front of the camera lens and take special photos. Bring it along, and it won't take up space. 4. Functions: Glass prisms are used to appreciate 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 the colors of the rainbow. 5. Wide Use: The glass prisms can be used to teach light spectrum physics or as research tools, and can also be used for decoration and photography, which can provide good filter effects. A creative gift for children to learn physics spectrum. 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