flash rocks packaging with rocks. reads "see a piezoelectric rock shw. Rub these rocks together and watch"

Copernicus Toys

Flash Rocks (6-14yrs)

Regular price

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.

  • Made in United States of America
  • Dimensions: 3.5" l x 6.5" h

really good gift wrap (& it’s free!)

both in-store and online, let us take care of the wrapping.

take a peek

free delivery in san francisco

We’ll hand-deliver your goods by tomorrow via vintage Italian Piaggio Apé truck. Tell your friends.

meet boggsworth
modern toys for old school fun