Varcidium is a metal-like material that when struck with another piece of Varcidium or mana emits a high frequency sound that damages DNAliens' ears, as demonstrated in Undercover.
Varcidium is brass-colored, but when Ben's team was trapped in Los Soledad it was more copper-colored.
Bern 10: Alien Force
- When Ben's team was trying to escape from Los Soledad, Gwen purposely hit Kevin (who had absorbed Varcidium) hard because he was making fun of her and Cooper.
- Varcidium seems to be highly valuable and/or rare, as one DNAlien told Cooper to be careful with the pieces he was working with, stating they were "priceless".