Black river stone 1,Natural stone 2,Polished river stone 3,Black river stone 4,size : 2-3cm/3-5cm/5-8cm/8-12cm ... .Our factory is loated in Luhe ,Nanjing --the hometown of River STONE ,where is convenient to NANJING and SHANGHAI port .The factory ... ,marble tiles ,engraved stone ,agate ,glass and so on . All the products are commonly used for construction ,decoration ,and landscape . high river stone