... ,Grey,etc Fineshes:Bushhammmered,Natural, Material Type: Black Slate Dish ( Slate Plate, Culture Slate )1.Resistant to Acid and pollutants 2.Thickness ... .Standard Size: 30X30CM ,25X25CM,20X20CM 4.Usage of Slate: Plate,Dish,Cheese Board,Sushi Set,Table ware,Dinnerware,Hotel ware. 5 ...