The Random Sandstone Groutable 5/8″ x 5/8″ joint is a single stamp. Looking for a natural stone look with the durability of concrete? Our Random Sandstone comes in 3 versions-including this groutable rendition. This variation of our Random Sandstone can be grouted for a more natural look. Each stamp contains 6 natural looking stones ranging in size from approx. 8' x 10″ to 13″ to 17.5″. See RS120 & RS130 for other versions of this pattern.