Grow your own sparkling crystal cluster of up to 10 cm+ in diameter! Discover the laws of nature which create crystals deep inside the Earth and perform experiments just like astronauts, who grow ultra-pure crystals in the weightlessness of space.
Just dissolve the pre-mixed crystal powder in water and within hours sparkling crystals will start to grow right before your eyes. A fascinating experience for children and adults!
Frozen ruby, 100 grams. For ages 8+