Piezoelectric Flash Rocks
Regular price
$7.99
Unit price per
only 2 left in stock
Just rub our Flash Rocks together to see a totally natural piezoelectric rock show! They'll glow internally and emit a distinctive odour!
Just place 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. Also, note the distinctive odour given off by the frictions.
Made in the USA. Stone size varies.