The Smithsonian Earth Science STEM Crystal Growing Kit is a hands-on educational toy perfect for children aged 10 and up. This kit allows kids to grow two different crystal formations, providing a fun and engaging way to learn about science and nature. With the Smithsonian brand behind it, you can trust that this kit is both high-quality and informative. Ideal for young explorers who enjoy tinkering and discovering new things, this crystal growing kit is sure to spark curiosity and creativity in children aged 8-16 years old.