Features: Make a rainbow by refraction easily produces rainbows with direct sunlight, and can also be used for some cool photo effects! A cool science experiment you can do at home – you can explain to your kids that light is made up of a spectrum of colors and talk about how rainbows form, and then cement the information with a demonstration. Trying out the rainbow trend on instagram – using a prism in front of the lens can really create a vibrant big rainbow on your face. It will be nice to add to your photographic materials. Makes a great gift-most people of age will have a lot of fun with it. Specifications: Material: K9 Optical Glass Size: 14x14x8 0mm/0.55x0.55x3.15" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you don't mind before bidding due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! No Retail Package Contents: 1 x Triangular Prism