seamless pattern of colorful river stones, gemstones and pile multicocolored mineral rock stones, . various rocks and

rock background texture pattern stone small pebble design color seamless decoration nature gravel material wallpaper abstract round construction floor shape natural backdrop concrete surface grey circle gray rough detail textured view black walkway outdoor sidewalk big paving hard garden cement wall top slab beach footpath colour flat lay flooring stonewall colorful river stones gemstones pile multicocolored mineral rocks