scratch or crack in stone

[northerncindy]

Hi everyone! I just finished bezel setting a Natural Cacoxenite (Super Seven) Gemstone. (Please don't judge my bezel setting - this is only my second one and I'm just learning.) I noticed there is a scratch or crack in the stone and I have absolutely no idea how it got there. (I did have to file a tiny bit of the edge of the stone for it to fit into my bezel.... maybe that cracked it?) I can feel it with my fingernail. Is there anything I can do to save this stone? Thanks for your help!
Cindy