Stamped overlays are a great alternative to natural stone.  This application costs much less and there is less maintenance because the surface is sealed and stains cannot soak down into the surface as with most natural stones.  The sealer we use also contains UV protectants to help prevent fading.  Stamped concrete provides a more natural rustic look than our other applications and there are many styles and colors to choose from.  The texture runs anywhere from 3/8" to 1/2" thick.