👉 A cockystone is a type of stone that forms on or near a cove or in shallow water, often due to the accumulation of sediment. It is typically found along rocky shores, particularly those with gentle slopes and clear water. Cockstones are composed of calcium carbonate and may be large or small in size depending on their shape and amount of sediment deposited. They can vary in color from white to black and have a rough texture that makes them easy to pick up by hand.