Being Wharfmaster of a busy port like Ratchet, I keep my finger on the pulse of information. I know all about the exchange of goods and money between here and Booty Bay.
The latest bit of news I've heard is about the Venture Company's Boulder Lode mine northeast of the Sludge Fen. One of the miners discovered an emerald the size of your fist. I know a few buyers who'd be interested in getting their hands on something like that, and I'd be willing to go half and half on its sale.
Look at the size of that thing, <name>! We're going to be rich! Let's see, according to the rates I've seen on gems going into Undermine, I should be able to figure out your cut--fifty percent, don't worry!
Now let's see... I think this should do about right. Pleasure doing business with you, <name>.