Using Integral color, the stone look is created by a variety of stamping techniques. First, pigment is added to the concrete while it is being mixed. Adding the color this way gives you a muted, soft color throughout the curbing. Once the curbing is extruded, the crew goes to work shaping, cutting, and matting the surface to create the desired Natural Stone look. The finished curbing resembles natural stone but is actually a continuous concrete curb. The prices range from $10.75 to $18.50 per foot depending on the style. We also install a steel cable inside the curbing for added stability.