Like I said on your other thread, if it has a good 'macro' setting, I would go for it. For jewelry, you really want that good close up. I would even go into the store and play around with a few cameras and see if you can get that good close up.
Depending on how advanced you are with shooting, I'm not sure if having a bunch of different functions are necessary (aperture priority, shutter speed, etc.) so one with at least an auto setting, along with maybe manual or 'sport' features would be nice.
I have a Canon I bought a few years ago that works really well in the Macro setting. We also just won a Nikon L120 in a work drawing, which is a nice camera, but I have yet to figure out how to get a good closeup. The camera is worthless to me if I can't set it in a macro setting.