Granite is of volcanic origin, formed from molten rock deep in the earth’s crust. It cools slowly as it solidifies under extreme pressure, forming a material that has a hardness and durability almost comparable with that of a diamond. Outcrops of granite are pushed to the earth’s surface by seismic activity. Granite is composed of feldspar, quartz and mica, in varying proportions, giving each granite “slab” its own unique colour and appearance. Other minerals may be present in smaller quantities, adding to the infinite variety of textures that may be seen.