Grow crystals in 8 colors - blue, pink, red, purple, green, orange, yellow, and teal; chemistry has never been so fun and colorful! 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 favorite 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 100% satisfaction guarantee - join the millions of parents who have chosen National Geographic’s award-winning science toys. You'll love this crystal lab, or your money back!