Should I be worried about this feather?

[monello96]

3 ct
Color I
SI 1
Excellent Cut
Polish Very Good
Symmetry Excellent

 

[Snicklefritz]

Well, what is it you think you might be worried about? Are you concerned it will be visible, or that it will pose a structural integrity risk? You can ask your jeweler to confirm whether or not it's "eye clean", a definition that varies greatly. And GIA graded SI1 stones should not have any structural integrity issues, but you can also ask the jeweler if the feather is surface reaching. My guess is it isn't though.