Flashing Rocks

$ 7.95

Copernicus Toys

Knock them together for an electrical effect. Develop and exercise problem-solving, fine motor skills, organization, concentration, and so much more! 
  • 2 quartz rocks with piezoelectric properties
  • Spark and glow in the dark when rubbed against each other
  • Do not hit these rocks together - just rub
  • Best observed in a darkened room
  • A product of the USA
Check out all the available Copernicus Toys here