Amaze and inspire children and adults alike with these Flash Rocks from Copernicus.
Teach your budding geologist about rocks with these fascinating quartz stones. Simply rub the rocks together in a dark room to watch them glow.
One of the few naturally occurring minerals with piezoelectric properties, these outstanding rocks also emit a distinctive scent when rubbed together.
Please note: These Flash Rocks are not suitable for children under 3 years of age.