The gallbladder is a little sac-like organ that is located under your liver and measures 3 inches long by 1 inch wide. Its purpose is to store bile, a fluid made by your liver, which is then released into your small intestine to help with food digestion. Gallstones. which are hardened deposits of bile that can form in the gallbladder, can range in size from the size of a grain of sand to the size of a golf ball. Some people only develop one gallstone, while others develop many at once. People who experience symptoms from their gallstones typically need gallbladder removal surgery. It is important to take note of these and treat them as gallstones are a common risk factor for gallbladder cancer.