I just did a search on Arizona Silhouette site.. I came up with these on sterling siler. Not sure if any of these can convert over thou... You might.. I have bought the baron sterling.. It is really nice.. Hope this helps a little..
http://www.arizonasilhouetteinc.com/cart/index.php?main_page=advanced_search_result&search_in_description=1&zenid=7358164c870f8a491bebcf6de94ee8de&keyword=Sterling+Silver+