Flatrock Gray Garden Wall stone is a flat, smooth-textured limestone featuring a natural color palette ranging from light gray to olive. With a thickness of 1″ – 3″ and top diameters ranging from 6″ – 14″, its stackable design is perfect for edging pathways, lining garden beds, and creating natural landscape borders. Durable and versatile, this stone blends seamlessly into a variety of outdoor settings.  Coverage averages 25 sq. ft/ton.