grey slate: 1.wall decorating slate 2.color:rusty,black,grey,green 3.for wall,roof,floor tile,paving,wall tile ... .etc 1)stone factory,exporter,directed sales price2)color:grey,green,black,rusty,multi-color etc3)sizes:150*550mm ... thickness 10mm(3/8),12mm(1/2),15mm,20mm(3/4)etc5)cut to size or any sizes at customers' requirement6 ... and details please feel free to contact us! natural grey slate