... , machine-made cobbles, pebbles, pebble stone in many colors and sizes Cobblestone and pebbleNautral cobblestone, river stone, machine-made cobbles, pebbles, pebble ... , black, white, stripe, mixed color, multi-color, snow white, black and white, green etc.3) Usage: in swimming pool or driveway ... ) Delivery time: 5 days for a 20ft container. beautiful stone crafts