With the Light-Up Crystal Lab Set, you can carry out chemistry experiments that let you grow your own coloured crystals - clear, green and blue. Containing all the chemicals to make up to three crystals, this set is perfect for the budding scientist! Place a finished crystal into the pyramid light-up display which has a colour-changing LED base. Illuminate your crystal with seven different colours: red, green, blue, yellow, light blue, pink and white. Transforms into an amazing night-light to share with your friends.