Stock up and keep the fun rolling with National Geographic’s 1-Pound Agate Rock Tumbler Refill Kit!

This Agate Refill Kit Includes:

• 1 pound of raw agate rocks for use in National Geographic and other rock tumblers
• 4 courses of polishing grit
• 6 jewelry fastenings for creating dazzling jewelry with your tumbled gems
• 1 Learning Guide

Order today and continue creating polished, stunning gemstones with your National Geographic Rock Tumbler!

We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.