I have finished the Never Tomb quest yet the journal still says I have only returned 2 artifacts. Oleff will no longer say anything and when I brought the last one I used a persuade check to get some adamantite. Is this anything to be concerned about?

hmmm. i got my adamantine from another area, when i finished the main quest there. so when i did the tomb quest you're speaking of, it registered the adamantine already in my possession.

so, i don't know. it seems to be more important how you get the item rather than just getting it. yknow?

V***V

If you got the adamantine reward, you've finished the quest. I guess it's just a journal bug.