Whats wrong with the ring?

I am just messing around with modeling, and keep running into a problem, my ring no matter how i place it always looks out of place on the picture,does it look wrong to anyone else?

http://img379.imageshack.us/my.php?image=ringln4.jpg

I think the problem with the ring is a couple things.

  1. The ring is too perfectly round. Most rings are flatter on the edge that is against the finger
  2. The setting bracket and gem are too large (or at least the bracket)

Here is an example of what I mean:
http://roia.servegame.org/images/ring.jpg
This is just an example but you can see the ring looks much more realistic than the dough nut shape. I usually make the shape that you see in the bottom pic and then use the spin button under mesh tools to create the ring. Hope that helps.
You could always add another sense of realism by texture mapping an engraving on the inside.