Smithsonian Rock Tumbler

Change rugged rocks into glistening semi-precious stones like agate, jasper and amethyst with this Smithsonian Rock Tumbler. Using a heavy-duty motor, this machine polishes rocks to perfection. Make jewelry and keychains with the finished polished rocks. Set includes tumbler, gemstone rocks, polishing powders, assorted jewelry settings, glue, AC adapter and complete instructions. Refill kit sold separately.