Slice Of Arizona Petrified Rainbow Wood. From the coloring, I suspect it is Araucaria Conifer of the Triassic era. Measures 8 inches wide by 11 inches long. Natural texture to back and edges, highly polished front with original label. Thickest edge is 2 inches, thinnest edge is 0.5 inch thick. Beautiful colors from cream to rust to dark brown, a real showpiece! Condition is true to photos.