These natural wall coverings are made from natural materials such as grasscloth, cork, and mica. Commonly made from arrowroot, grasscloth has a fresh, organic look that truly stands apart from other materials. Cork wallpaper has a highly textured appearance, thanks to its cork slabs that have been laminated to a substrate. Mica wallpaper contains numerous mica stones or chips adhered to a substrate. Whatever the specific material used, natural wall coverings are an environmentally friendly choice for interiors.