Kids love rocks, gems, and fossils, and this exciting Christmas countdown calendar will give them a new specimen to add to their collection each day as the holiday approaches. The fun and excitement culminate on the final day, as kids unearth a shimmering rose quartz specimen from the included mini dig brick, just like a real geologist!

This educational take on a classic holiday tradition includes the following rocks, gems, and fossils: Agate, Green Aventurine, Green Fluorite (Rough), Geode, Tiger's Eye, Snowflake Obsidian, Pyrite (Fool's Gold), Red Jasper, Blue Quartz, Red Agate, Amethyst, Blue Calcite (Rough), Polychrome Jasper (Rough), Quartz Point, Rose Quartz (in dig brick), Crinoid, Brachiopod, Orthoceras, Bi-Valves, Gastropod, Clam, White Urchin, Black Urchin & more!

This advent calendar also includes a pouch for storing their treasures, as well as a magnifying glass and identification sheet for closer examination of their new collection.

Rock and mineral collecting is a fascinating and popular hobby kids love, and the 2026 National Geographic Advent Calendar is a great introduction for boys and girls with an interest in geology. They'll love collecting and learning about these premium rock, fossil and mineral specimens that were formed over millions of years!

Put a scientific twist on the holidays this year with the 2026 National Geographic Rock, Mineral & Fossil Advent Calendar!

We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.