Limestone is a sedimentary rock composed mainly of calcite and aragonite. Most of these stones are formed in shallow, cold waters. It may contain fossils and marine skeletal fragments that give the stone a natural, organic element commonly used in architectural design.
The Great Pyramid in Egypt was made of limestone as well as many buildings in Canada. It is a main component in concrete, soil conditioner and can be used as a white filler in toothpaste and paint.
Along with marble, limestone is reactive to acid, therefore in the past, acid rain has been a problem in the preservation of limestone structures. This stone will naturally weather over time while the color will blend into a natural patina. Since there are no artificial colors, there will be no fade or rust and it actually gets better with time. Its consistency makes it a popular choice for both current and future projects that contain expansion plans. Limestone is mainly used for flooring, interior and exterior wall cladding, fireplaces and backsplashes.
It is not found everywhere, only in areas underlain by sedimentary rocks. Limestone is one of the nations most precious resources. It is considered unique and demanded in many places, so it is often hard and competitive to obtain. Today, limestones are growing in many water environments such as the Caribbean Sea, Indian Ocean, Gulf of Mexico and more.