The black limestone Vessel Sink has a dynamic look that features a grooved exterior and smooth bowl. Long revered for its durability and elegance, limestone is often used in kitchens, vanities and bathroom sink tops. With proper sealing and care, natural stone basins can maintain their beauty for decades, preventing staining and chipping as well as the growth of mold and mildew. Each item is carved from natural limestone and will feature individual variations in color, shade, and veining.