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This NSI Smithsonian Magic Rocks Instant Crystal Growing Kit creates a brilliant underwater garden. Rocks grow to different heights up to 4" and assorted colors. This NSI Smithsonian Magic Rocks Instant Crystal Growing Kit creates a brilliant underwater garden. Rocks grow to different heights up to 4" and assorted colors. Instant Crystal Growing Kit Create a Brilliant Underwater Garden Rocks Grow to Different Heights up to 4" STEM Item - Earth ScienceWHAT'S INCLUDED Includes 1 Space Background Print, 1 Sticker Sheet, 1 Tank and Detailed Instructions. Imported Spot clean Some assembly required Age: 10 years & up Plastic, Metallic Salts and Sodium Silicate 11" x 2" x 10"MODEL NUMBERS Model no. 52381 Size: One Size. Color: Multi. Gender: unisex. Age Group: kids.
