... . 3. Size 200*400/250*400/400*400 Natural Roofing slate (roof tile) 1.Natural finish.a little bit rough ... , green, beige, yellow, grey, white quartzite, pink quartzite, black quartzite, red quartzite, pink and etc. 5.Slate pattern: slate tile, slate floor ... mat (flagmat stone), tumbled stone, step (stairs), random slate(irregular slate), river stone (pebble stone), and machinemade cobble stone. stock ...