I have been selling on ebay for just about 7 years.  One of my favorite items to sell or buy for that matter is sterling pieces.  I have to say, and I think you would agree that I really hate to see silver items that are out of focus or show refections.  I have taken photographs of 100s of silver pieces in all sizes and shapes.  I would like to share what works for me, in the hopes that someone will benefit from my experience. 

The first suggestion I can share is: 

1) Try not to use a flash when taking a photo of a silver item.  It is best to use natural light. I have found that the best time to shoot your photos is on cloudy, overcast day).  You do not want sun glare or reflections.  

2) Set your camera to the closest setting(zoom) and set your piece up on a solid color background.  I find a darker color like green or black velvet looks rich but a light color like light blue or yellow can lighted up the photo and make the item pop.   

3) Play around with the reflection.  When you have a good shot take it. 

4) If you find it is nessary to use a flash, set your item up and more as far back as possible.  This will prevent the flash-reflection.

The second suggestion I can offer is when shooting a pattern such as on flatware or repousse items, hold one side of the piece, zoom in and again play with the reflection.  When you are photographing a close up never use a flash, and always make sure you are in focus. 

Sometimes an item is just to big, like a tray or vase, again stand back as far as you can.   Remember there is also photo editing that can crop and turn your photos. 

Some reflection is okay and sometimes unavoidable but keeping them to a minium is the desired effect.

Good luck!