NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit – Includes Rough Gemstones 4 Polishing Grits Jewelry Fastenings and Detailed Learning Guide Great STEM Science for Mineralogy Geology Enthusiasts

ENHANCE YOUR ROCK COLLECTION – Or start a new one! Makes all rocks shine like professionally polished stones EVERYTHING IS INCLUDED – This kit includes the tumbler four polishing grits sifter learning guide PLUS nine types of real rough gemstones Manufactured by NATIONAL GEOGRAPHIC. EASY TO USE – Simple instructions one-touch settings and an automatic shutoff timer SATISFACTION GUARANTEE – For 131 years National Geographic has been committed to providing fun and fascinating educational opportunities for children and stands behind this Rock Tumbler with a two-year warranty MAKE ANY STONE SPARKLE – Polish everyday rocks into dazzling gemstones