Feature: 1. 20PCS SET: The rock collection kit contains 20pcs rocks, individually placed in each unit. Open the box and take a closer look at each rock like a real geologist. 2. EASY TO IDENTIFY: Rock identification chart included in the package will help you identify different rocks and minerals and help identify various rock types. 3. APPLICATIONS: This rock and mineral kit is perfect for kids ages 5 and up who love geology, for rock collectors, teachers, or anyone who loves rocks. 4. MULTIPURPOSE: Complements educational supplies, collectibles and decorations to engage kids and develop a love of geology in a fun way. 5. PARENT CHILD INTERACTION: The rock and mineral collection educational kit is suitable for both adults and children to learn, and the parents can explore nature with their children. Specification: Item Type: Rock Collection Kit Material: Gems, Crystal Purpose: To deepen children's knowledge and curiosity. Ideal for young scientists, especially those with a passion for geology. Package List: 20 x Rock Note: Size, color and shape of each rock may vary slightly from the picture shown.