Learn more about beautiful crystals as you watch them grow. The 4M Crystal Growing Experiment teaches children and adults the beauty and complexity of crystal growth with amazing results. Simply follow the instructions to perform seven crystal growing experiments. Watch as each sparkling crystal forms and grows into its own unique dome. Once grown, these crystals will last indefinitely for family and friends. This kit makes a great gift for any child interested in science or geology. Recommended age: 10 to 14 years old Box dimensions: 21.5 x 24 x 8.5 cm This set includes: 7 crystal cultures