Description Natural Minerals and Rocks for Children Rocks Advent Calendar with Christmas Surprises Teenagers Christmas Advent Calendar Durable quality: ensure a long-lasting Christmas countdown with our advent calendar. This odourless and robust calendar is made of high-quality materials selected for their durability, and does not deform easily. Enjoy a safe and environmentally friendly experience with materials that have a long service life. Unmatched Stones: This advent calendar contains 24 different stones that are perfect for any stone collector. Every day you can open a window and discover a raw or polished sample of a mineral with beautiful shape. Journey of discovery: this Christmas advent calendar contains 24 types of geology samples. It is a perfect way to explore the world of stones and minerals with your children. They cultivate their hobbies, develop their scientific curiosity and discover the beauty and diversity of nature. Perfect for all ages: this Christmas advent calendar is popular with girls, boys and other teenagers who love colourful surprises. It is also so much fun that it will delight even the elderly and children. Exceptional gift: This Christmas advent calendar is a great choice for children who want to learn and have fun at the same time. From the 1st to the 24th, each day has a different surprise ready to help them develop their skills and creativity. It can also be used as a class reward or as a perfect gift for birthdays and other occasions.