This is 950 silver and I have been wearing it for 6 weeks or so. Excellent craftsmanship and very pretty. I shower and sleep as well with this on. No tarnish. I do wipe it with soft cotton cloth few times a week. Will highly recommend this.
I bought this as a gift for my son and he really likes it. It is well-made and has a secure clasp. I would have no problem giving it as a gift for a woman, too.