Natural stone veneer is a dolomitic limestone characterized in its durability, density, resistance to water, and acidic content of rain and soil. Tested for freezing and De-thawed. Our products are certified to meet architectural specifications and maintenance-free. 12-inx24-inx3/8-in interlocking panel composed of 2-1/4-in by random length individual Tumbled pieces glued together Used for exterior interior - walls, fireplaces, waterfalls and landscaping Install using mortar for natural stone veneer or marble tile Cleaned with water and can be sandblasted It is recommended to purchase a minimum of 10% waste to account for design cuts and patterns Combination of light to dark tones of gray Thickness = 3/8-in + texture blueImage Disclaimer: The colors of the illustrations may vary with respect to the original pieces. The settings shown are decorative suggestions used for advertising purposes. The measurements listed are nominal measurements