Stone money refers to large, circular stones used as a form of currency by the Yapese people of the Caroline Islands in the western Pacific Ocean. These stones, made from limestone, can weigh several tons and are often carved with intricate designs. Their value is determined not just by size but also by the history and effort involved in acquiring them. Unlike traditional money, stone money is not typically exchanged directly. Instead, ownership is transferred through verbal agreements, and the stones often remain in place, serving as a symbol of wealth and status within the community.