Capture the rainbow with the Constructive Playthings Light Crystal Prism! Encourage a love for science an learning with your children as they use the prism to see beautiful colors. The light crystal will fascinate children by demonstrating the rainbow of colors hidden in natural sunlight. The light crystal is bevel cut to reflect images into wonderful kaleidoscope patterns. Perfect for science experiments or everyday play! Each individual Light Crystal Prism is 2.5". Constructive Playthings is committed to providing safe, compliant products and a healthy, safe working environment worldwide. We require that all products meet all applicable federal regulations, which we review on a continuous basis