Nice shapes and tones. Black was a good choice for the background. The highlight areas are a bit bright. Since this is all about design, I would have cloned out some of the smallest bits intruding into the frame (lower left corner; a little in the space just above that, also on the left; lower right side).
on Aug 28
Nice job on a tough subject; the jewelry has nice detail, and lots of shine w/o the obnoxious glare that usually comes with sort of shot.