It is round and comfortable.  If you look closely at the blue carbon fiber it is installed a little wonky but not noticeable from a few feet.

I got it for durability and so I wouldn't have to take it off while during housework.  The irony is that since tungsten is difficult to cut off if your finger is swollen (from being jammed or broken) I have to take it off while working.  Please note that while it is possible to remove the ring  in the ED I have been told by an ER doctor that it is much more difficult with tungsten rings.