An ancient stone, travertine is a sedimentary rock which is made up of layers of calcite formed from the accumulation of organic matter in hot springs. The stone has a natural honeycomb structure where water has flowed through the material. It is a very strong stone which when cut exposes small holes on the surface. These holes can be left unfilled or can be filled with a resin for a smooth finish. It is normally used for flooring, wall cladding, vanity tops, fireplace surrounds and furniture.