Thet do sterling silver collars and other things that look really pretty, Master wants to get me one but I thought I better post and see if anyone has had experiences with them before we spend all that money.
Yes my Master had a custom gold collar with 18k gold O ring attached from them with matching gold bell and pattern wire :) is a permament collar with an screw lock. You can see an image of the collar here, is beautiful. http://the-little-skylark.deviantart.com/art/Slave-collar-68342482