For the Water Goddess — the one who still believes an aquarium is a portal.

Drop the colored stones into the solution and stand back. Within ten minutes the metal salt crystals begin to climb, and by the end of six hours you have an underwater garden of stalagmite towers up to 4 in tall, in colors no rock has any business being. Repeat the steps and they climb higher still. The enclosed STEM content explains the chemistry behind it, which does not make it any less like magic.

Set the tank on a windowsill with the space background behind it and let a ten-year-old check on it hourly. Everything comes in the box.

Instant crystal growing kit · Colored stones (metal salt crystals) and magic solution (sodium silicate) · Includes aquarium tank, space background and sticker sheet · Crystals begin growing in 10 minutes · Rocks grow up to 4 in tall · Ages 10+ · Last one!

Magic Rocks Crystal Growing Kit

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