Ox gallstone (Niuhuang)  We are full time exporter of high quality natural ox gallstone/cow Bezoar. Our product obtained from disease free cattle. We can supply up to 10Kg. monthly. Shipment prompt by air courier (DHL). Price depends on ratio of wholestone / brokenstone. At moment for 80% whole/20% broken. US$/Kg. C&F destination. Origen: South America.  Contact us by email: Juan Pablo Castedo for more details.