Being a sedimentary rock, limestone is composed of mostly calcium carbonate in the form of the mineral calcite. Limestone tile is perfect for those who desire natural stone for their flooring. Exuding a luxurious look, limestone is mostly popular with designers and architects. Limestone is naturally porous, rugged, and durable. This is a great selection for both indoors and exterior facades. Maryland Carpet and Tile carries only high quality limestone tiles from reputable vendors that we have exclusively worked with for years.