Cubic zirconia pendant necklace

While I think this looks pretty online, I have to say in person the silver that's on it looks rather cheap and the clasp on the back slides around to the front continuously so that's pretty annoying. The diamond looks really pretty though and it's very sparkly. Not sure if I'm going to keep it or not... :-( I really love the other leather necklace I have from j.Crew.com that is the red leather around the neck with a freshwater pearl pendant. Now that one's really great so I was hoping this one would be too but I'm not sure...