Together with your children, cultivate magical crystals! Parents participate together to increase parent-child relationship. The perfect learning method allows children to experience incredible scientific wonders through hands-on projects, and therefore like to explore scientific wonders in science. A quality study will teach your child the interesting science behind this experiment. You can get real crystals, and you can add the finished product to the rock collection and show it to your friends or family. It fascinates children, and it inspires a love of science in a fun and exciting way. This is a great way to improve their patience, concentration and practical skills. A great gift for children. Specification: Science and Education Toy Type: Biological/Chemical Educational Gift For Ages 8+ Color: purple/blue Size Chart: 175x125x60mm/6.89x4.92x2.36inch Package Includes: 2 crystal seeds; 2 stir sticks; 2 display cups; 2 measuring cup; 2 bag of alum; 2 Instruction manual. Note: 1. This is not infant toy , please take away from kids to avoid eating. 2. Please allow slightly error due to manual measurement. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 4. Wish you a wonderful on-line shopping!