In just a few weeks, you can make what it takes rivers and oceans thousands of years to create—smooth, polished stones that can be transformed into jewelry. This kit contains all you need to get started: a powerful tumbling cylinder, semiprecious rough stones, polishing powder, and findings to make a key chain, necklace, ring, or earrings.

For ages 10 and up. A/C adapter included. 12"W x 6"H x 8"D.