GROW CRYSTALS IN 8 COLORS - Blue, pink, red, purple, green, orange, yellow, and teal; Chemistry has never been so fun and colourful | GROWING IS EASY - Easy-to-follow instructions and 4 silicone growing chambers make growing and saving your crystals easy. NIGHT LIGHT DISPLAY - Show off your 5 favourite home-grown crystals on the included light-up display | START A ROCK COLLECTION - Includes 5 real gemstone specimens and a STEM learning guide teaching all about crystal formation. Join the millions of parents who have chosen National Geographic's award-winning science toys.