... -8,7-9,8-10,9-11,11-13MM Nature Stone Roofing Slate of Black Sheets 1.Natural finish.a little bit ... color,multicolormaterial: slate, quartzite, sandstone, travertineWorkmanship: cemented culture stone, glued culture stone2. Floor Tiles: thickness—10-25mm / size—300*300,300*600 ... P014, rusty S1120, green, greysurface finish: natural, honed, brushed5. Slate Roofing:thickness—3-3.5,4-6,5-7,6-8 ...