Generally speaking, Gallstones are either waxy green all the way through, or calcified, either with a calcified crust or completely calcified. What you have posted here are very unusual. They look like they could be calcified stones with a coating of cholesterol, although that would be an odd reversal of the typical pattern. I doubt anyone on curezone will be able to identify them accurately, although maybe Telman will have some insights. The best way to proceed might be to do a series of standard liver flushes, to see if you can produce more of these. This might help to validate their origin, while providing some relief from symptoms.