Bluestone is a dense, durable type of natural sandstone that is commonly used in landscaping and construction. Known for its blue-gray color and smooth texture, bluestone is often used for patios, walkways, and steps. It is prized for its strength, resistance to weathering, and aesthetic appeal. Bluestone can be cut into uniform slabs or left in irregular shapes for a more natural look, making it a versatile material in hardscaping.