... ,Gray,Brown.etcLithologySlate,Quartzite,Basalt,Limestone,Marble,Sandstone,Travertine,Artifical stone ,shale ,etcThickness10~15mm,15~25mm , 20~35 mm,as your ... the wall corner more nature and consistant .4.>Usage :culture stone ,indoor flooring ,outdoor pavestone, tiles ,countertop ,etc .5.> One factory owned ...