Hi John,
Do a Google for jewelry supplies or sterling silver. Dick Neighbors posted a link to a supply not too long ago.
This may be it : www.ccsilver.com
I don't see any silver rings on that page. If you are talking about "NICKEL SILVER", there is NO silver in them. Nickel silver or "German Silver" is an alloy of copper, with nickel & sometimes zink, but no silver...JER
a company called ' rio grande ' in new mexico. ph # 800 545 6566 "stuller" in lafayett, la. ph # 800 877 7777. i have used both in my jewelry business. they can supply any amount or shape you need. chuck starkey