Well I just took an hour trying to see if the right hand, middle finger had any signifigance. Probably because that is where it fit. As mentioned like it actually belonged to someone else and passed down. It would also make sense that the stone was replaced. JMO Out there somewhere may be another ring with the original diamond.
Most of the Muslim women I see all the time are in their traditional clothing, but sometimes they'll be in sweats or jeans still their heads covered, but that's only if they are right on their own step or something.
Somebody has to be missing this woman.