For thousands of years, humankind has been fascinated by the beauty and shape of the crystals. The word crystal comes from the Greek word kryos, meaning cold. In ancient times, crystals of clear quartz were thought to be ice, hence their name. With the Krazy Krystals Laboratory, you can investigate the science of crystals with loads of activities and experiments. Each kit contains enough material for the experiments to be repeated several times. For children ages 10 and up.