Tune in to the phenomenon of ulexite. Plop this rock on any surface and it demonstrates a cool fiber-optic effect. The mineral ulexite projects images to its surface, that's how it got the nickname "TV ROCK". It's a super fun addition to any rock collection. Made in the USA 6x1x3.5" card with information.

Part of Copernicus Toys Compact Curiosities line -- small packages full of big wonders. Great little collectible science toys and STEM demonstration items.