Dropped by various fire elemental themed creatures in Northrend zones, such as:
- Raging Boiler in Borean Tundra
- Seething Revenant or in The Storm Peaks
- Unbound Firestorm in Halls of Lightning
- Raging Flame in Cauldron of Flame in Wintergrasp
Found while mining Titanium Veins.
Crystallized Fire as an ingredient