Organically curved Ring bezel

 From:  gunter511
11602.1 
Hi All,

I'm trying to create a ring bezel to hold a princess cut gemstone and am not sure what the best way to go about it.

This is similar to what I'm after:


I've drawn a curve, but don't know how to get the lower point to join the ring shank.


The other way I thought was to create a surface like this and add points to push and pull to create the shape but the planar command doesn't work:



Could someone let me know the most efficient way to build this?

Many thanks in advance!
Gunter