In February 2007, the world's rarest baseball card sold at auction for $2.3 million.
If you think that's totally wild, consider the world's rarest bible, which could net you $25 to $35 million. Single pages of the Gutenberg Bible go for $25,000 each.
An ancient artifact such as the Gutenberg Bible is perhaps expected to fetch a fortune at auction, but what about a pair of jeans? Original Levi Strauss jeans recently sold for $60,000 to a collector.
From wine, coins and jewels to jeans, pets and food -- collectors abound throughout scores of different topic areas and categories. Click through to see the the world's rarest items, including one stunning red gem and a very, very pricey bowl of soup.