I believe thats what he told he makes orders with them every so often stones brought them in wc from the actual main channel of rio araguia not one of it's drainages and not "wild caught" from asian waters like some of the ones coming in recently have been you can email him for further info or confirmation the three (now down to one sadly) I recieved are extremely high quality mark is one of my favorite vendors on this site and always easy to deal with