Johntoy Science Explorer Crystal Making (Assorted)

Are you curious, do you fancy a physics experiment and do you want to make your own crystal? Do it with this Science Explorer Crystal Making. Fill the cup with warm water, stir in the Cyrstal powder, let it rest and then put the base stone in it. Wait a day and watch your crystal grow and grow, after 7 days the crystal has grown. Wow what a beautiful specimen! From 10 years. Different versions are supplied together. Different variations will be randomly selected.