There was no option to get an Iron version back when I graduated in '97. The story was the iron ones turned your finger black so they stopped selling them.
Still have mine after all these years and it doesn't come off anymore, so I think I'll be taking it to the grave.
I guess it could be cut off if I really needed to :) But other than that, no it doesn't come off. You tend to gain weight as you get older, even on your fingers.
It's not tight enough to be a real concern, just enough that I can't remove it. I think it's more symbolic than anything...the only reason I made it through school was to get the ring and it's a big part of who I am as a person.
We can usually get new ones for about 15$. I don't think the adjustment costs less. There is also the option of not wearing it, as wearing rings that keeps touching a mouse is annoying sometimes.
I was thinking of the stainless steel version, but looking that up looks like the answer is "depends". Depends on the definition of "magnetic" (since all materials are to a degree) and the type of stainless steel.
I just noticed that my own "iron" ring (which is stainless steel) doesn't seem to respond to typical magnets you'd find around the office.
Clearly _iron_ is though, considering it's the element with the symbol "Fe" which is short for Ferrum.
Usually (but not always) higher quality stainless steel is not magnetic, while the lower quality is slightly magnetic.
However even slightly magnetic can be a problem in an MRI - and worse, there is no practical way for the MRI tech to tell how the stainless steel will act, so they will err on the side of caution.
Still have mine after all these years and it doesn't come off anymore, so I think I'll be taking it to the grave.