EXPLORE CRYSTALS – Geodes are naturally-occurring volcanic rocks that contain slow growing crystals. Break open the rock to discover beautiful minerals inside. PREMIUM QUALITY – National Geographic selects only the best geodes from mines all over the world, so you’re guaranteed to find amazing crystals. INSPIRE A GENERATION – Kids love these treasure-filled rocks! Promote an appreciation of nature and geology in your child with this fun, hands-on science kit. TEACHING SCIENCE – Introduce your child to geology with our full-color educational Learning Guide where they’ll learn about geodes, volcanoes and gemstones like quartz and amethyst. HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!