National Geographic Jasper Rock Tumbler Refill KitStock up with raw jasper and keep the tumbling fun rolling! This Jasper Refill Kit Includes: ★ 1 pound of raw jasper rocks including mookaite kabamba zebra picture red dalmatian green zebra polychrome yellow for use in National Geographic and other tumblers ★ 4 courses of polishing grit ★ 6 jewelry fastenings for creating dazzling jewelry with your tumbled gems ★ 1 full-color learning guide Order today and continue creating polished stunning rocks with your National Geographic Tumbler! National Geographic Toys makes the highest quality hands-on science toys and all products are backed by exceptional service. About the National Geographic Society: 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. ★ STEM: Science ★ STEM toys are Science Technology Engineering and Math based products that are geared towards developing useful skills in all areas of learning.