lol stupid question but I really want to know.
Also if they do then how would you determine which side's the positive and the negative? Especially if you have the plain old silver one it's hard to determine.
This is another question but can the PK putty be used with the raven?
It doesn't really matter unless you're using the ring with another magnet, but you could always test by getting a perfectly horizontal stick and hanging the ring from it with string, then spin the ring gently.
The positive side will come to a stop facing north.
All you need now is a compass!
Also you might want to think of the possibility of the ring's inside being positive and the outside being negative or vice versa, and I can't think of any way to test this apart from getting a pre-labelled magnet.
Hope I could hlep anyway,