Flash Rocks |Compact Curiosities Rock with Electrical Effect

Knock these rocks together for an electrical effect. Flash rocks are one of the few minerals with piezoelectric properties. So, when subjected to mechanical stress, these two little rocks generate an electrical charge and glow. What a great addition to any rock and mineral collection! 6x1.5x3.5" peggable 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. Perfect for birthday gift bags, Christmas stockings, and Easter baskets--or any time you need a little science. Spark curiosity for collectors of science and nature. We recommend Compact Curiosities for a wide range of retail settings including toy stores, gift stores, children's museums, science museums