Scientific Explorer Ultimate Crystal Growing Kit Most impressive crystal growing kit you will ever find with 13 different growing activities Grow a shimmering crystal studded geode that glows in the dark and crystals that bounce and jiggle Includes sodium acetate, 3 packets of monoammonium phosphate, 2 packets of alum, zinc sulfide, polyacrylamide and a bag of granite rocks Also includes 2 cards, 4 containers, magnifier, measuring beaker, 2 petri dishes, pipette, plaster of Paris, safety goggles and an instruction guide Recommended for children 12 years of age and older