Cast your stone shape then watch it become encrusted with crystals.
Combine substances and pour the mixture into the provided mould to create your own gem. Then create the ideal crystal growing solution, drop in your gem 'seed' and watch as crystals grow over it for the next few days.
Contains three chemicals, a gem mould, stirring stick/scoop, petri dish, and step by step illustrated instructions.
Ideal for ages 6 and up with assistance.