If an operation has to be done, ask the doctor about saving the gallbladder. You can live without it, but digestion and the bowels won't ever be the same. If after the operation you still experience pain, see your doctor again because stones can still form from the bile in the liver and become lodged in the bile ducts or the stump of the cystic duct. Gallstones are often varied in color and size. Passing stones as large as nickels has been reported, with the help of a flush.
Colors can range anywhere from off-white to dark green.
The darkness of the stone could indicate the stones age. A yellow color appearing in the whites of the eyes can indicate liver or gallbladder disease. On the right side at the lowest rib, place your fingertip and press. If an extended left arm goes down when testing the gallbladder, it could indicate gallstones. The gallbladder shows up in the right eye only.