It is stretchy and no clasp. I only wore a few times. I teach and get items like this all the time. I wear a few times so the student can see me wear it but after 13 years I am running out of room to keep these items and would like someone to get use out of them.
I'm not sure. If feels light weight so it may be painted silver over something. It was given to me by a student in the past. After 13 years I can not keep everything!! Hope this helps!