I think you're right. I started googling liver stones /gall stones after you responded, and what I saw look like the gall stones shown in several pictures. (Which makes sense, as coffee enemas affect both the liver and gallbladder.) Haven't seen liver stones yet, but honestly... it took me a while to get the guts up (haha, punny) to start coffee enemas, and then more time to start looking in the toilet to see what was coming out. :P