Here's a lousy photo; please advise on how to improve it [View all]

[Orrex]

As I see it, there are a few main problems:

1. The contrast sucks.
2. The contrast really sucks.
3. Did I mention that the contrast really sucks?
and
4. The focus isn't the best either, but I'm less worried about that right now.

I promise that I'm not quite entirely inept at photographing jewelry, but it seems that the translucent beads on pieces like this really mess me up.

At present I'm limited in my choice of equipment; I have a Nikon Cool Pix 5600 which has served me reasonably well. I'm not looking for magazine cover-quality, but I'd like to take a shot that gives a better representation of the bracelet or necklace or whatever I happen to be snapping.

Do you photo gurus have any wise advice for achieving good results with translucent objects like this?

Your input is much appreciated!