Rock Candy Crystals Growing Kit - Edible Science, by GeoCentral Growing rock candy was fun when we were kids, and it's still fun today! Introduce another generation to this fun edible science with rock candy you grow in just 7 days! Kit includes 2 jars, 6 sticks, 6 bags & ribbons for the candy. Labels for personalizing your creations, and instruction booklet. WARNING: Choking Hazard - small parts. Not for children under 3 yrs.