The images are rather dark and lacking in contrast. You want jewelry to sparkle! It should also be much larger in the frame, so that details are easily seen. A light tent is the best thing to use when you are photographing jewelry. I used to have a few images of a wedding set I did for a friend that I could use as an example but I can't find them right now. The image below of a Rolex was shot for a jewelry store, and eventually used in one of their billboard advertisements. I shot the watch in a light tent, being careful not to get any reflections on the crystal. The image should be very sharp and very contrasty. I photographed it on a piece of glass but you could achieve the same effect with Photoshop. There is a lot of negative space to the right of it, but that is for their logo and information. JPEG compression, and this site's resizing have affected its sharpness somewhat, but it is still good enough to illustrate a point.
, by the way if i buy more expensive Digital camera Canon or Nikon so the result will be same my mean for make perfect picture need a much experience or expensive cam ?
