Sonoma Cast Stone makes interior or exterior cladding in sustainable EarthCrete™ concrete, taken from the landfill and not the land. It's available as classic concrete, stain-free NuCrete™ or MetalCrete™ (shown). With MetalCrete™, the concrete is embedded with powdered metal. Choose from genuine copper, bronze, nickel, steel and more! Lightweight, interlocking panels can vary in size and shape. Going green? Go MetalCrete™.