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.
- Great for STEM projects
- 2 Natural piezoelectric rocks
- Just rub them together (no need to strike them)
Copernicus Toys is a family-run specialty toy brand. We design activity kits, science kits, games, and novelty products to cultivate interactive discovery and exploration for all ages. Copernicus Toys makes our products with the help of exceptional individuals challenged with intellectual, physical, and other disabilities. They work as a team to develop vocational skills and economic self-sufficiency. We employ workers in Pennsylvania and Virginia.Finding toys that aren't made in China or another faraway place can be tricky, so we work hard to create cool toys here in the USA. Made in Charlottesville, Virginia.