I want to propose to my girlfriend of 5 years this summer! I'm looking for a good website where I can find a good quality engagement ring setting for $3,000 or under. Must be vintage style with or without halo, white gold, and has to accommodate a 1.5 to 2 carat round cut stone. I'm very concerned about her hitting the stone on things and the ring turning around on her finger (she hates that) so I want it to stay put which is why I want the stone to be sitting a little low and not too high AND I want the band to not be too thin (I want something that's between 3 MM to 4 MM thick... unless it's a split shank). Please can anybody send me to a website where I can find a ring like what I described or even a direct link to a ring.

Outside and indoor game suggestions are welcomed. Preferably easy to put together.