BREAK OPEN A MASSIVE GEODE – Kids will love the excitement of cracking open this gigantic geode to reveal the dazzling crystal formations hidden inside!
SUPER-SIZED SCIENCE FUN – This massive geode measures 4.3-5.1 inches in diameter, making it a standout specimen kids will be excited to break open.
A GENUINE NATURAL SPECIMEN – Each geode is unique, with crystal structures and mineral colors that spark curiosity and inspire a love of geology. It's also the perfect start or addition to any rock collection!
LEARNING GUIDE & INSTRUCTIONS INCLUDED – Includes a full-color Learning Guide with fascinating geode facts, plus instructions to help kids safely break open their rock.
AWARD-WINNING PRODUCTS – Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit - Durable Leak-Proof Rock Polisher for Kids - Complete Rock Tumbling Kit - Geology Hobby Science Kit, Rocks & Crystals for Kids (Amazon Exclusive)
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National Geographic Rock Tumbler Refill Kit - 1 Lb. Mix of Genuine Rough Agate Rocks for Tumbling - Rock Tumbler Supplies Include Rock Tumbler Grit and Jewelry Accessories, Raw Agate
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National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks
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NATIONAL GEOGRAPHIC Rock Tumbler Kit - 3 Lb. Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Kit Includes Rocks for Tumbling and Rock Polisher Grit, Rock Tumbler for Adults and Kids
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