[@Raijinslayer] I've also added another possible poison idea for Eve. What if her poison weakened a gem's durability down to her own level? That can lead to so many disasters, especially with gems like Amber, Zircon, and Mars. 

So all the possible Eve poison ideas thus far are:

Something akin to hydrocarbon toxicity

Something akin to smoke inhalation

Alteration of emotions

Impediment of judgement

Loss of durability

Edit: thought of another one

Extreme burning sensations (the very thing she feels whenever she overuses her powers)

Thoughts?