I just did my 6th liver cleanse and it was uneventful except for about 25 peas size stones and one black one. The black one is about 1 inch by 1/2 of an inch. It is rubbery and grey on the inside. If you put it inbetween your fingers you can sort of roll it back and forth but without scrishing it at all. It is firm but rubbery. I looked at page 13 of the intrahepatic stone gallery and it sort of looked like it could have come from the sepatic duct. The writing is so tiny I can't read what is in front of the sepatic description. Does anyone know if this could be one of those stones? It is a really strange one and like nothing like anything I have ever had before. Any help on this would be appreciated.