Check this out,
Screen capture from inventory, item is there.
http://clip2net.com/s/6rQuRq (lost one)
another capture;
http://clip2net.com/s/6rQgiX
final one;
http://clip2net.com/s/6rQYJR
Clearly first two are for heroes (3rd cavalry) and as you can see i clicked on artifacts tab so I'm not mistaken it for a sword for sure.
So, it appears in inventory but lets go to hero equipping.
Screen-capture;
http://clip2net.com/s/6rR6qQ
only one of the 2 artifacts appear, and i did not equip it to another hero because number 1 it's below level requirement, number 2 GS exceeds GS limit.
So i can only view it in inventory, only thing i can do it break it and get frags back. other wise it doesn't appear in hero equipping so useless.
Looking forward to hear something