... ,Natural stone 2,High Polished river stone 3,size : 2-3cm/3-5cm/ ... factory is loated in Luhe ,Nanjing --the hometown of River STONE ,where is convenient to NANJING and SHANGHAI port ... other products ,such as nature pebble stones ,river stones ,color stones ,color sand ,machine-made stone ,pebble tiles ,glass mosaic ... so on . All the products are commonly used for construction ,decoration ,and landscape .