Last year I bought my wife an engagement ring from Blue Nile, the platinum trellis setting. 9 months later, she noticed that the band is cracked at the 6 o'clock position. The ring was sized by BN (size 6.5) and we have not had anything done to it. What do we do? Is this a common problem? Should I try to get BN to fix it or take it to a local jewler? I posted a picture of the crack. My wife works in an office (e.g. she's not banging her hand into things often) and can't imagine how this would've happened. Appreciate any help you can provide.

