<human>: I want to learn more about the different types of natural stone.
<bot>: Natural stones are made up of minerals and other materials found in nature, such as quartz, feldspar, calcite, and mica. They can be classified into several categories based on their chemical composition, such as igneous, sedimentary, and metamorphic rocks. Each type of rock has its own unique characteristics that make it suitable for various uses. For example, granite is a hard and dense igneous rock that is often used for building materials, while limestone is a sedimentary rock composed of calcium carbonate that is ideal for construction and decorative purposes. Metamorphic rocks, which include marble, slate, and schist, are formed when existing rocks are subjected to extreme heat or pressure over long periods of time. These types of rocks have beautiful patterns and colors, making them popular choices for interior design projects.