DAZZLING CRYSTALS – The perfect family activity. Become a scientist and grow amazing blue crystals with this classic science kit! INTERACTIVE LEARNING – There’s no better way for your child to explore the wonders of science then through a hands-on science project EXPLORE CHEMISTRY – National Geographic’s premium learning guide will teach kids the fascinating science behind this experiment REAL CALCITE CRYSTAL – Includes a real calcite crystal for your rock collection. Compare the calcite to the blue crystals you grow with this kit RESPECTED QUALITY – Providing children with the best educational toys, this kit comes with National Geographic’s 100% satisfaction guarantee *Please note – Colours and designs may vary, only one supplied. There are several styles available within this assortment and unfortunately it is not possible to request which one you would prefer.