Autumn (Autumn Lilac, Painted Desert) Natural Cleft Slate Sample. Approx. 3″x3″ or 4″x4″ size, subject to availability. As a product of nature, variations in color and veining can and do occur offering you the luxury of owning a one-of-a-kind item. Samples are meant to represent the natural stone colors as ely as possible but the final product can vary slightly from the actual sample you receive.