Warg-teeth necklaces are highly valued as a symbol of strength in battle and power among the Dunlending clans.
'You are looking for more sellers for the auction? I have a necklace which I am nearly done with and almost ready to sell. It is crafted of Warg-teeth. Dunlendings who wear them are powerful and demand respect from all around them, whether they retrieved the teeth themselves or not.
'There is one last tooth which I need to finish this necklace, then it will be ready for sale. On the rock to the east is a powerful Warg, larger than the rest, called Hormgrat. His tooth shall be the centrepiece of this necklace. Bring it to me, and I shall sell in your auction.'
Hormgrat can be found at the Hound's Rest to the east of Avardin.
Cadvan asked you to get him a tooth from the most powerful Warg on the rock to the east.
Cadvan is in Avardin in the central Starkmoor.
Cadvan will be eager to place the Warg's tooth into the necklace.