National Geographic Hobby Rock Tumbler Kit

Make any stone sparkle and polish everyday rocks into dazzling gemstones Enhance your rock collection or start a new one! Makes all rocks shine like professionally polished stones Everything is included in the kit; tumbler, four polishing grits, sifter, learning guide plus nine types of real rough gemstones Easy to use with our simple instructions, one-touch settings and an automatic shutoff timer 100% satisfaction guaranteed - for 129 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.