A high-tech tumbler that transforms rough rocks and minerals into smooth, shiny gemstones.
I like the idea… you throw in some raw stones that you got on your last day in the countryside, you then wait some time and voila, you get a handful of beautiful polished beads. You may want to spend a little more and get into a more serious, professional looking tumbler, like these ones from lortone. Anyway, keep in mind that tumbling is made for the patient one as it takes many days for stones to gradually polish. You may take a look at this page for more info on the whole thing.