GROWS 4 CRYSTALS IN "QUARTZ, "AMETHYST", "EMERALD" AND "FLUORITE" UP TO 4" (10 CM) IN DIAMETER! Growing SPACE AGE CRYSTALS ® is easy, fun and educational. Just dissolve the pre-mixed powder in water and within just a few hours sparkling crystals of up to 4" in diameter will start to grow, right before your eyes. This kit will grow three clusters and one single crystal: Grows “Quartz” cluster, “Emerald” cluster, “Amethyst” cluster & “Amethyst” single crystal. A fascinating experience for children and adults. Crystals and crystal growing powder are biodegradable . Contents: Crystal growing powder, spatula, instructions. USA: Ages 12+ WARNING: This kit contains chemicals which may be harmful if misused. Read cautions on individual containers carefully. Not to be used by children except under adult supervisions. Weight 1 lb Dimensions 9.5" height x 6.25" width x 2.25" depth