The work represented in this post was done by Nathan Giffin, owner of Creative Rock Forming
This artist uses a concrete material to create these beautiful faux stone finishes. He trowels it between 1 & 3" thick in order to create the deep natural crevices of real stone. He also uses what he calls hand made "skins" to texturize the surface. He uses a variety of tools such as brushes, trowels, stamps, and even some hand made tools that give the faux rock it's realistic character.
Giffin uses a variety of techniques for the faux paint finishes on the concrete, such as acid stains, acrylics, water based stains, and even latex paint. He also uses different methods for applying the paint colors —brushing, spraying, sponging, and spritzing. They all give a different effect.
So, as you can see, this is not an easy task, but WOW, it is just amazing how real the stones look. Gorgeous work!
Check out this great resource on: Decorative Concrete