The Trail of Bones - Chapter 2

The reason we did not see our dark cousins make their way south past Skyblade's Hold is that they tricked us. Our eyes were looking in the wrong direction. The Dragon Gate still holds, so they Druchii would have have taken that path. No, they went through Caledor's Triumph, and via the compromised Unicorn Gate, south into Ellyrion. If this relic is as dangerous as you say, then you will have to make haste to Ellyrion. The garrison at the Cascades of Thunder has not reported any Druchii activity, so they must have taken it elsewhere, the Shining Meadow perhaps.

Travel south into Ellyrion and search the Shining Meadow for any Nehekharan Relics similar to the ones you found in Chrace. Also check the surrounding area for a reliquary that could have been inside the artifact chest. Check it for the Seal Piece.