This kind of optical glass prism can reflect seven-color sunlight. It can be used to teach children to explore the mysteries of light, stimulate a child's thirst for knowledge, and improve the children's interest of understanding the magic world. Description: Great prism for teaching Can be also a toy for kids Made of high quality optical glass Side Length: Approx. 1.2 inch / 3cm Prism Length: Approx. 6 inch / 15cm Package Includes: 1 x Prism
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