I have always had issues with taking pictures of my jewelry. It was such a task, I would have to take a gazillion pictures to get one good or half way decent image. I still don't like that part of the process, I'd rather be making jewelry instead of taking pictures of it.
My cousin, who also does jewelry in Ohio http://www.uzuri-designs.net/ found a blog with a girl who had instuctions for a home made light box, and I would like to thank RED PANDA http://yesredpanda.blogspot.com/2008/12/my-lightbox.html for this, it works great here is a picture of mine.
Just a regular cardboard box with holes cut out at the top and on each side covered with a piece of white paper and you shine the light from all three sides. (I only have one light I am using right now, so I imagine when I get 2 more the pics will be even better..lol)
It looks crude, but is very effective. Thanks again RED PANDA!