Seraphinite has 1 side polished, the rest of the stone is natural. There are 3 sizes available. Please select the one you prefer from the drop-down box. The first stone is 1" in length, .75" in width and weighs approximately .4 oz. The second stone is .75" in length, 5/8" in width and weighs approximately .4 oz. The third stones are 5/8" in length, .5" in width and weighs approximately .3 oz.