SPACE AGE CRYSTAL(R) Grow your own collection of three crystal clusters on rock and one single crystal. Just dissolve the crystal growing chemicals in hot water, place a rock with a diameter of up to 4" (10 cm) into the solution, and watch how crystals grow on it. 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 supervision. (Age 12+)
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