Black slate paving has sawn edges and is suitable for patios and garden paths. Material: Natural Slate. Colour: Black. Size: 900 x 600, 22.8sqm pack, sample. Black slate paving has a lightly riven surface, which includes shades of charcoal and slate black.    The project pack includes four sizes to create a traditional random pattern.  Use the large 900 x 600 paving to create a contemporary design.  Suitable for internal and external use.