Recently, my husband had to have his gallbladder removed after a sudden attack which we thought was a heart problem. Thankfully, albeit painfully, it was discovered that his gallbladder had 4-5 stones inside which needed to be removed. His were mainly on the small side, but they can range from tiny up to the size of a golf ball. My grandmother had one removed in her middle age that was the size of a quarter and perfectly round, which the doctors gave to her to keep. That still sits on her dressing table inside a clear plastic bottle all these years later. Yikes!