- 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
