Heavily Pollutd Rock Dropping From Lower Leveled Monsters

Heavily is 61-90, I think.

Sounds about right. My Hermit was picking those up, and he's 81. I figured that it looks to be every 30 levels or so.

Also, just for reference, the rocks drop from all monsters that drop rocks I believe. Its just what kind you can see that show up. I was getting Heavily polluted rocks from Jr. Sentinels. So it's contained to character level, not monster.