Flashing Rocks
$ 7.95
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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
EM-CT-FR
