MAKE ANY STONE SPARKLE - 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 - This kit includes the tumbler, four polishing grits, sifter, learning guide PLUS nine types of real rough gemstones
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