Limestone

Limestone is a sedimentary rock, most often formed from ancient seashells and corals and other "limey" materials. Most limestone was formed in tropical to sub-tropical areas with sedimentation ocurring in shallow waters of up to 50 feet. Limestone formation happens when, given millions of years, layer upon layer causes solidification from shear weight. The texture of limestone is typically fine and often the shells that caused it's formation are clearly visible. It is the softest of the dimensional stones used today, which makes it easier to work and therefore more affordable. Although limestone is usually available only in an unpolished state, some limestones are hard and dense enough to take a polish. Uses of limestone include flooring, fireplace surrounds, columns and furniture pieces.