I'm farming this for the 5th time (not always the same server) over the years.
It's a statistical certainty to drop if you kill enough mobs. It might drop on your 3rd clearing, or 30th clearing or more. But it will drop eventually.
The other choice is the Earring of Diminutiveness from Depths of Darkhollow. That's considered "very rare". I've never farmed that, though.
Edited, Jun 4th 2023 10:57pm by Eagleclaww