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

Price: $46.99
(as of Jan 20, 2026 09:05:34 UTC – Details)

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Your purchase has purpose!

Every purchase helps support the global nonprofit National Geographic Society in its work to protect and illuminate our world through exploration, research, and education.

AGATES FROM AROUND THE WORLD – 1 lb. of rough agate rocks are sourced from around the world. Colors and sizes will vary between refill kits.
FOUR GRADES OF GRIT – Coarse, Medium, Fine, Polish. Transform your raw stones from rough rocks to dazzling gemstones! This refill kit also works with all rock tumblers.
JEWELRY FASTENINGS – Additional rock tumbler accessories include 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring. Create custom jewelry from your newly polished gemstones!
LEARNING GUIDE – Our detailed learning guide will teach you all about agates and includes many amazing and fascinating facts
RESPECTED QUALITY – National Geographic is proud to provide only the highest quality STEM toys and all our kits are backed by our 100% satisfaction guarantee