From NSI International, The Original Magic Rocks Instant Crystal Growing Kit lets kids create a brilliant and colorful crystal garden in minutes. This deluxe crystal growing kit includes 0.44 ounces of magic rocks, 4.5 ounces of sodium silicate growing solution, a 6 x 3.5-inch aquarium with decorative objects, and detailed instructions. Styles vary for aquarium decoration but may be a space-themed scene with a rocket. Rocks will grow to different heights but may be as tall as 4 inches. • Age Grade: 8+ • Product Dimensions/Weight: 5.8 L x 8.0 W x 2.5 H / 0.84 lb • Inner Pack Dimensions/Weight: 16.3 L x 8.6 W x 6.5 H / 5.6 lb • Made In: China • Batteries not required