Limestone and marble are the same basic material. Marble is simply changed limestone. Limestone is the result of millions of years of sea shells and sea creature bones settling on an ocean floor and transforming into calcium carbonate. Only 3% of the stone makes up the color, with most color coming from the other natural elements that combine with the stone when the stone is formed (i.e. iron deposits which can give a reddish brown color). Given enough heat and pressure, limestone crystallizes and becomes marble. The crystallization allows the stone to take a polish during finishing, which brings out the rich colors we associate with marble. Limestone, which is not crystallized, will not accept a polish and therefore is only available in a natural or honed finish. Call one of our design consultants now to learn how you can use limestone in your next project.