Laura, your shop is really nice and your products and prices are great. I do have input on a couple of things though:
I would recommend shooting your jewelry all on a white background to keep the eye flowing through your shop. I see you shoot everything on a fabric background, but it varies slightly in color and kind of breaks up the flow. Shooting in a white photo box or on a piece of white tagboard in the shade on a sunny day makes your listings look extra professional and also more congruent with eachother.
I would also think about your tags. If I were looking for jewelry, I would be searching for 'statement necklace' or 'costume jewelry', something that describes what TYPE of piece I am looking for and not necessarily what it is made of, does that make sense?
Your items are lovely, I really like
http://www.etsy.com/listing/103865771/sterling-silver-black-onyx-turquoise. Good luck to you!