History·23 March 2026·4 min read
The stone money of Yap — the heaviest money in the world
On a Pacific island, people used stone discs as big as cartwheels for money. And it worked.
On the island of Yap in the Pacific, money was huge stone discs (rai), some weighing several tons. They were so heavy that, after a deal, the stone stayed put — only the owner changed.
Money without touching it
Everyone knew who owned each stone, even one sunk in the sea. It's a stunning example: money is, at heart, a shared ledger of who owes whom — exactly the idea behind today's bank accounts.
