hmm, I have never looked but I would start off by checking jtv.com if it were me. They sell loose gems and jewelry. Also, I think fire mountain gems does as well.
oh, I am a jewelry lover, just haven't had a chance to really look. Maybe this weekend I will have more time. Being the "boss", I have been trying to make myself more "useful" during the business day.
You need to upload the photo to somewhere like photobucket or facebook and then right click the image, select "copy image location/url". Go to advanced editor, click on the tree button. Then paste the url and it should paste your image.