Swarovski Nirvana Ring Worn on middle finger for 3-4 years and never removed. This is not a traditional metal ring so I was mine not sure if this ring cutter would work. This is a two person job. Impossible to clamp and twist the knife alone as one hand is useless. My friend helped and the first blade got boring trying, so we had to replace the blades halfway through the cut (there is an extra blade that comes with it) and the second blade held but it also wore out towards the end Replace the blades (I mention this because initially I didn't have any Could find instructions). Use pliers to hold the old blade in place, then twist the handle counter-clockwise and it will unscrew. Remove that blade and put in a new one Blade in and then screw in with the handle. I give him 5 stars because he finally took this ring off my finger very easily and because it's not a traditional ring. It sliced through both the crystalline piece surrounding the group and the group itself. I can no longer use it without new blades, but I still hope I don't get another ring caught on my finger.