World of Science Crystal Growing Kit Grow Your Own 2 Crystals Educational Toy 
 
Want the kids to have tons of fun learn at the same time? Then this crystal growing kit is perfect for that! Learn the process of crystallization and create your very own crystals! Comes complete with everything you need to get started right now!

Set contains:
 
1 Bag of crystal compound
2 crystal display trays
2 granite base rocks
Wooden mixing stick
Instruction sheet.