Crystallized Firestone

Source
This item drops from all bosses in Firelands on heroic mode.

Currency for

 * Apparatus of Khaz'goroth (heroic)
 * Obsidium Cleaver (heroic)
 * Chelley's Sterilized Scalpel (heroic)
 * Covenant of the Flame (heroic)
 * Deathclutch Figurine (heroic)
 * Deflecting Star (heroic)
 * Firebound Gorget (heroic)
 * Giantslicer (heroic)
 * Trail of Embers (heroic)
 * Hide-Bound Chains (heroic)
 * Lava Bolt Crossbow (heroic)
 * Morningstar Shard (heroic)
 * Ranseur of Hatred (heroic)
 * Relic of the Elemental Lords (heroic)
 * Riplimb's Lost Collar (heroic)
 * Scales of Life (heroic)
 * Scorchvine Wand (heroic)
 * Singed Plume of Aviana (heroic)
 * Soulflame Vial (heroic)
 * Spire of Scarlet Pain (heroic)
 * Theck's Emberseal (heroic)