MATERIAL: Made of high quality optic glass, durable and clear, good for photography and Teaching.Decorate your home with sun light, and let you home full of rainbow even in sunny days.FUNCTION: Useful to split beam of light into different spectral components which are displayed as the colors of the rainbow. Create a gorgeous rainbow for your kids with help of this prism, they will be pleased and feel much fun, enjoy your family time.DIMENSION: The prism length is 15*15*15mm, make it easy to hold in front of the cameraslens and make especial photo. it is pretty small and compact, portable enough to carry out and convenient to store with no much space taken.APPLICATION: The glass prism can be use for teaching light spectrum physics and the way of prism bends light can have some amazingly stunning effects on your shots.GREAT GIFT: Made of optical glass, it is crystal clear and looks very pure, full of high-end and classic feeling.Give it to teenagers to save them from difficult physical lessons or let little boy have fun with self rainbow-creating.This is a 15x15x15mm optical prism with multiple applications.Use it as teaching tool. Optics principle is always too abstract to understand. With the help of this prism, turn supplicated lessons into visible reflection and refraction, much easier for students to digest.Create a gorgeous rainbow for your kids with help of this prism, they will be pleased and feel much fun, enjoy your family time. Simply put in your house as a decoration tool, Put it in windowsill or any place sunlight can arrive, decorate your home with sun light, and let you home full of rainbow even in sunny days. Specification: Material: optical glass Color: crystal clear Size: 15x15x15mm(0.590.500.59inch)Weight: 10g(0.022lb) Features: 1. The amazing spectrum prism can be applied for physical experiments, rainbow making, photography, etc. 2. The optical glass can create bright and beautiful rainbows by splitting beams of light into different spectral components. 3. You can use the prism for refracting lights to create beautiful and fantastic prop while taking photos.