Limestone is a beautiful, natural rock composed mainly of seashells, skeletal fragments of marine organisms such as corals and molluscs, and other marine sediments. Depending on the region in which limestone was formed, its colour varies from soft whites and creams, to jet black.
Limestone is the best example of a historic building material that is still recognised and popular today. This stone material was favoured by ancient Egyptians and was used as the main building material for the famous Great Pyramid in Giza, which is still standing today. This is testament to the weather resistance of this versatile, natural stone.