Make the countdown to Christmas even more exciting with the National Geographic 24-Day Rock & Gemstone Advent Calendar.

Behind every door is a new geological discovery, giving children a daily surprise as they build their own collection of genuine rocks, gemstones, minerals, and fossils.

Designed to combine festive excitement with educational exploration, this advent calendar encourages curiosity, collecting, and hands-on learning throughout the holiday season.

With 24 days of discovery and strong seasonal gifting appeal, it is a standout Christmas line for children who love science, nature, and hidden treasures.

Age 3+