The Smithsonian Magic Rocks Instant Crystal Growing Kit is a STEM Earth Science educational toy suitable for children aged 10 and up. This custom bundle includes all the necessary materials for growing crystals, providing a fun and interactive way for kids to learn about science. With the Smithsonian brand behind it and a focus on earth science, this kit is perfect for young learners interested in exploring the world of crystals and minerals. The kit is designed to spark curiosity and creativity in young minds, making it a great gift for kids who enjoy hands-on learning experiences. Includes 0.44 oz (12.4 g) Metallic salts, 2 X 4.5 fl. Oz (133ml) Sodium Silicate, 1 space background, 1 sticker sheet, 1 tank and detailed instructions. Please Note: This is brand new, never used, and complete contents are in box, however as per the photos, it is open box and there is shelf-wear on the product box. Please see photos.