The Kula Ring is a ceremonial exchange system in the Trobriand Islands, off the coast of Papua New Guinea. Men sail hundreds of miles in outrigger canoes to exchange two kinds of valuables: shell necklaces called soulava, which travel clockwise around the islands, and shell armbands called mwali, which travel counterclockwise. The objects themselves are not very useful. Their value lies in the relationships they create and maintain.

Bronisław Malinowski described the Kula in detail in Argonauts of the Western Pacific, published in 1922. He showed that the exchange was not just economic. It built prestige, settled debts, and opened trade routes for ordinary goods like pots, canoes, and food. A man who held a valuable shell for a time gained reputation. Giving it away was as important as receiving it.

Key features

• Two directions of exchange: clockwise and counterclockwise.
• Shell valuables never stay in one place for long.
• Participation brings prestige and social ties.
• Ordinary trade happens alongside the ritual exchange.

The Kula remains one of anthropology's most famous examples of how exchange creates social order.