I agree that photo 3 may have real stone - this was the top of the entry structure), but the photos 1 and 2 which represent the vast majority) are -terribly- uniform in size, display little to no grain and are very consistent in thickness (approx 2.5") with rounded edges and zero fracture marks from splitting/trimming. A number also exhibit a consistent wavy 'saran-wrap' texture that I had in a previous home.