Fiery Core

Fiery Core is the internal core of a very powerful, flame-based elemental. Used in numerous high-level craftable items often paired with Lava Cores. It is also required to smelt Elementium.

Source
Fiery Cores are a random drop from most creatures in the Molten Core.

Blacksmithing

 * Black Amnesty
 * Blackfury
 * Blackguard
 * Ebon Hand
 * Fiery Chain Girdle
 * Fiery Chain Shoulders
 * Dark Iron Bracers
 * Dark Iron Boots
 * Dark Iron Gauntlets
 * Dark Iron Helm
 * Dark Iron Leggings
 * Dark Iron Reaver
 * Nightfall (axe)
 * Sulfuron Hammer

Engineering

 * Core Marksman Rifle

Leatherworking

 * Black Dragonscale Boots
 * Chromatic Gauntlets
 * Corehound Belt
 * Corehound Boots
 * Molten Belt
 * Molten Helm

Tailoring

 * Flarecore Gloves
 * Flarecore Leggings
 * Flarecore Mantle
 * Flarecore Robe
 * Flarecore Wraps

Mining


As a quest objective

 * Favor Amongst the Brotherhood, Fiery Core