M. G. Rockmin International offers Natural Copper coloured Slate Stone. M. G. Rockmin International supplies a wide range of marbles, granite. Sandstone, limestone, slate, mosaic and handicraft. The Natural Copper coloured Slate Stone is available in different sizes and formats like Tiles, slabs, cut to size pavements and flags to be used in Wall-cladding, roofing, flooring and other types of interior and exterior applications.