Limestone is a sedimentary rock composed predominantly of calcium carbonate, usually calcite, although it frequently shows traces of magnesite and other carbonates. It may also contain small amounts of minerals such as clay, hematite, siderite, quartz, etc., which modify the color and degree of coherence of the rock. The practically monomineral character of limestones makes it easy to recognize them thanks to two fundamental physical and chemical characteristics of calcite.
The limestone, cut, carved or roughened, is used as building material or ornamental, in the form of ashlars or cover plates. With the finishes you can combine classic and modern, depending on the shape and color, there are numerous examples of use are numerous from the pyramids of Egypt to the Cathedral of Burgos, nowadays is used a lot in historic buildings, modern style constructions And classic cut, facades, etc.