Growing Crystal age 4-5 years Clean-cut pieces and Ravensburger’s tight

Clean-cut pieces and Ravensburger’s tight interlocking fit provide a pleasurable puzzling experience for all

Each plastic aquarium is equipped with a ventilated lid

Chase it down and let the fun begin again

It comes in a handy plastic toolbox for easy storage

They are infused with traditional play elements and their recognizable BRIO Scandinavian design looks wonderful in any home

Growing Crystal age 4-5 years Clean-cut pieces and Ravensburger’s tightGrow sparkling, colorful crystals overnight from a safe solution of potassium aluminum sulfate. Single out the largest crystal shard, redissolve the remaining crystals, and repeat the crystal formation process to grow a larger, more striking crystal. This kit includes four packets of crystal growing salt and two dyes (red and blue) so you can grow a variety of crystals in different sizes and colors.