Frostfire Circlet

Frostfire Circlet is cloth head armor for mages. It is part of the Frostfire Regalia armor set.

Source
This item was a quest reward from Frostfire Circlet (quest). The required quest item Desecrated Circlet dropped from Thaddius in Naxxramas.

It was removed from the game, but later reintroduced via the Black Market Auction House with a starting bid of.