This is a Little Red Store exclusive. We call it the Polish Stick and it is an important and effective check on your polished rocks. First, you wet the leather portion of the Polish Stick and sprinkle on your favorite polish (we normally use Cerium Oxide). Then wash off a rock from the polish stage and rub it vigorously on the leather. If the rubbed portion of the rock DOES NOT produce a better shine, you're done with the polish stage--if IT DOES produce a better shine, then keep your rocks in the polish stage for another week.. A Polish Stick can be re-used on many rocks as long as you use the same polish. If you want to experiment with different polishes, then order a separate Polish Stick for each polish you want to test.