... you need Descripation:Cobbles and pebbles, polished, tumbled or natural. Size is different as customer's requestWe are the stone factory producing ... .0mm , 3.0 -5.0mm , 4.0 -6.0mm , 4.0 -8.0mm , 6.0 -12.0mm , 8.0 -16.0mm , 12 ... , 30 -40mm , 32 -50mm , 32 -64mm (Other specs. are available) colours Nature pebble for the Art Decoration