The thickness of United States Copper Creek Blend Schist slabs can vary depending on the specific supplier or manufacturer. However, standard thicknesses for natural stone slabs typically range from 2 to 3 centimeters (0.75 to 1.2 inches) for interior applications, and 3 to 5 centimeters (1.2 to 2 inches) for exterior applications. It is recommended to check with the supplier or manufacturer for the specific thickness options available for the Copper Creek Blend Schist slabs.