Natural Stone Veneers International, Inc. Here's a link to our gallery of other installations: http://www.nsvi.com/slideshow.iml?Stone=31 . It's a natural quartzitic sandstone cut to a thin veneer, approx 12.2 lbs per square foot. Corners should be integrated with flats though to break up a vertical jagged line that results when stacking them one on top of the other. Any low height material should be installed in like manner.