Flash Rocks

$ 6.00

Rub these rocks together for an electrical effect. Flash rocks are one of the few minerals with piezoelectric properties. When subjected to mechanical stress, these two little rocks generate an electrical charge and glow.

What to do: 

Put a rock in each hand and forcefully rub the rocks together.  To see the glowing electrical effect fully, you should do this in a darkened room.  

  • Natural Materials -  each flash rock vary in size.
  • This listing is for one set of flash rocks
  • Contains small parts.  Adult supervision is required.  Not suitable for kids under 3.  Do not hold close to eyes while performing the experiment.  
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