Introduction

In 20 ten a rock went up for auction. At the time, people figured it would go for about 20 million dollars. It ended up selling for more than forty million dollars. In that moment, the graph pink became the most expensive diamond ever sold. Just a couple of years ago, michel and barocco bama sold a series of books in an auction to the book world. The final bid was reported to be more than 60 million dollars. That would probably make it the most expensive booksale in history. People in the book industry like book auctions because it gives them deniability. Because so much money changes hands in auctions, whether you're selling tulips or books or diamonds