Here's one of the cards (done by me, not a graphic designer)
Pretty, isn't she?
Yea, I know "Gem Town" is a lame name, so we are looking for suggestions.
If you like Coup you should give it a try. You can lie about the cards you have, and there are many different roles. There is also no player elimination.
It's just 39 cards. You add play money and something to represent gems and you're good to go with 3 to 10 players.
Go here to get all the files and rules.