National Geographic Almanac Geology of Rocks and Minerals

- Fantastic examples sourced from across the globe.

- This geode calendar features polished pyrite, blue and rose quartz, indigo gabbro, red and black jasper, green speckle, agate, tiger's eye, and more rocks, jewels, and fossils!

- Kids get to open a plaque each day leading up to Christmas, and within is a unique rock, mineral, fossil, or gemstone.

- With the storage bag included, they may begin an annual rock collection with this Christmas countdown calendar.

A treasure-filled 25 days leading up to Christmas.

- Ideal for those eight years of age and up.