Hi, this is the ErthCOVERINGS 40F Cream Quartzite 3D that comes in a 6"x24" panel. More info can be found here. I do recommend ordering a sample or visiting a dealer to see the stone if you are looking to use it on your project. It is definitely a great look! For the size of stone to use for a two story project, it does depend on the look you want to achieve. Larger scale stone does have a more modern look, if you wanted something more traditional a stone panel such as the one in the image above works great to!