I believe it has been done before, remembering not all rings are made alike.
I pulled one apart ( Not for payment ) just curiosity, The one I did was a ceramic and resin one, it was not particularly easy. The chip was fine, the antenna was not.
Ideally the antenna needs to remain intact so that it can be measured.
I would reccomend posting a picture of the ring here; As mentioned, Amal is very busy at the moment, but he will see your post when he pops in to play catch up and can give you official direction.
I would have suggested you raise a 
ticket, but I think this topic and your option would be better served publically, because if yours is possible, there will likely be others interested, especially as you are in the UK