Pristine Fashioned Nacre Earring no longer exists in-game after the tradeskill revamp. The normal version of the earring is what is required.
If you make a Fashioned Nacre Earring with an alt you will not get the quest update unless you put it in a broker box then remove it, or sell it to a merchant and buy it back.
Return to Dukaris.
Scout locations to find new champions:
Anaz Mal camp in the Sinking Sands. ( -427, -141, -1273 ) Copy/waypoint -427, -141, -1273
Raef Ew camp in the Sinking Sands. ( -400, -120, -676 ) Copy/waypoint -400, -120, -676
The Rujarkian Battlemaster's camp at the entrance to the Clefts of Rujark. ( -644, -114, -183 ) Copy/waypoint -644, -114, -183
Return to Dukaris.
Go to the Sinking Sands and protect Dukaris as he walks toward the camp of the Rujarkian Battlemaster. You will find Dukaris at ( -699, -114, -264 ) Copy/waypoint -699, -114, -264.
When he's fighting the Battlemaster, make sure to not to click on him again or he will just stand there and let the Battlemaster kill him. If you do, simply, re-click on him and choose 'Lets do it' to get him going again.
If Dukaris dies, you have to go back to his original spawn point and start over. You may have to log out and back in to properly reset everything.