Features: Best Rocks collecting Gift: This Christmas calendar gift box has 24 days and contains 24 small gifts, a perfect standalone collection or addition to any kid's rock collection. Makes an excellent gift for girls and boys! Perfect Christmas Gift: This Christmas rock collection calendar kit is the perfect way to inspire a lasting love of geology for all. Whoever child or adult would love to explore the secret in the box during the whole month. Christmas Atmosphere: Countdown to Christmas is an exciting time for children. This Christmas 24 days countdown calendar hides 24 different rock minerals, so kids can enjoy 24 days of December Exploring & Learning: The 24 types of rocks and minerals are the perfect way to inspire children's lasting love for geology, explore the world and teach them to understand these Fossils, rocks and crystals! Customer Service: With customer satisfaction as our first priority, we offer a satisfaction service for all of our merchandise. Specifications: Name: Christmas Countdown Calendar Mineral Material: Rock Weight: 340g Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.