Mom, look how smooth and pretty this rock is! Is that your girl, who just finished using her Rock Tumbler for Kids by Elenco for polishing a gemstone for her favorite princess ring? Or is it your boy who used this marvelous electronic rock polishing machine to convert a dull backyard stone into a shiny treasure? Imagine, how he can proudly demonstrate the results of his work, patience and geological explorations to his friends, when the amazing stone is dangling on a self-made key-chain, shining as bright as his eyes? This children Rock Tumbler machine includes a durable and simple-to-use electronic tumbling tool for creating precious stones from ordinary rocks: 3 steps, 3 grinding grits, 8 oz. semi-precious stones for a magical transformation. To make this even more fun, Rock Tumbler for Kids from Educational Toys Planet also includes a complete jewelry making kit: beautiful 18 silver tone adjustable necklace chain, 4 adjustable rings, 3 key chains, 3 pairs hanging earring wires, 12 setting holders in 3 styles, 12 jump ring connectors, and even glue! The beautiful results are available in a matter of 3-4 weeks, so as an added benefit b your child get's to learn the patience and hard work have truly outstanding and remarkable results! UL approved AC adapter included.