[SamLL]

FYI a tungsten carbide ring, although it cannot realistically be cut off your finger, is brittle, and can easily and safely be snapped with a pair of locking pliers (locking to avoid clamping down on your finger). You may be thinking of titanium rings which are not removable in this fashion and thus are less safe.

[Scoundreller]

ah, good to know. That method and another (not as great, but maybe more at hand method) here: https://www.youtube.com/watch?v=eKxUYvKR-jw

and a more proper (and $$$) method: https://www.youtube.com/watch?v=MqupCjkNqUk