National Geographic Gemstone Advent Calendar NG2410

24 DAYS OF REAL ROCKS & GEMS — Each door reveals a genuine rock, mineral, or gemstone, turning every day of December into a new discovery. Kids build a full collection by Christmas Eve.
PREMIUM, AUTHENTIC SPECIMENS — Includes polished gemstones, raw minerals, sparkling crystals, and unique geological treasures. Every piece is hand‑selected for quality and kid‑friendly size.
FUN, EDUCATIONAL HOLIDAY TRADITION — Combines festive excitement with hands‑on learning. Children explore geology, crystal formation, and natural history while growing their own collection.
INCLUDES FULL‑COLOUR LEARNING GUIDE — The illustrated booklet helps kids identify each specimen, learn fun facts, and understand how rocks and minerals form in nature.
PERFECT GIFT FOR YOUNG COLLECTORS — A screen‑free activity that keeps kids engaged all month long. Ideal for budding geologists, holiday gifting, and families who love meaningful advent calendars.