... Natural Quartz Rustic Cement Stone of Brick Panel Cladding 1) Material: Quartzite, cemented together, natural split surface, rough surface 2 ... Regulations, which cover color, size thickness tolerance,workmanship, surface treatment, packing way, crate, gaps, inspection rate etc ... requiredcolor: black, gray, green, rusty, dark grey / surface finish: natural, can be with holes6. Slate Irregular Random ...