Quartzite stones have various levels of porosity, hardness and compressive strength. They are best suited for exterior and interior applications. Indian quartzite tiles, copper quartzite tiles, natural slate tiles renders a graceful, natural finish to any building and is more cost effective than other wall and floor coverings. All natural quartzite stones, slate tiles, copper quartzite tiles, natural slate tiles are fireproof and non-slippery. Natural slate tiles are used in architecture, flooring, wall cladding and roofing etc. The usual colors of slate are black, dark grey, greenish grey, copper and purplish grey.