human
I want to learn more about the different types of natural stone.
assistant
The most common type of natural stone is granite, followed by marble and limestone. Granite is a hard, dense, igneous rock that is composed primarily of quartz and feldspar minerals. Marble is a fine-grained sedimentary rock composed mainly of calcite and dolomite minerals. Limestone is a sedimentary rock made up of calcium carbonate. All three are popular choices for countertops, floors, walls, and other architectural elements. Natural stones vary in color and texture depending on their composition.