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& 39;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& 39;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.