BlackSlate Tile According to your demands drawing,we can process and make different sizes and model of slate.The quality of slate in my factory is quite good ,also we will offer you the best and lowest price.you can choose the model as follows: 1) one side natural,another side calibrated(long and wide error control-1mm to +0.5mm,Thickness error control within 1.5mm) 2) one side natural ,another side honed(long and wide error control0.5mm,Thickness error control within 3mm) 3) Both sides are natural(long and wide error control1mm),Thickness error control within 5mm) We are very glad to provide our clients with a visual description of our product line.CN-01black CN-02green CN-03grey green CN-04black rusty CN-05 green rusty CN-06pale green CN-07grained black