Crystal Growing Kit Experiment Science Education School Learning Children Fun 1 x Crystal Growing Kit Set contains 1 x bag of crystal compound, 2 x crystal display trays, a mixing stick, 2 x base rocks and an instruction sheet. Perfect for the young scientists who love an experiment! Watch your crystals grow from the powder. Please Note: You will need to add water. (not included in the kit) Approx Size: 21 x 14 x 4 Age: 8+ years.