Nightstone

Source
Mined from:
 * Pyrite Deposit
 * Rich Pyrite Deposit
 * Obsidium Deposit
 * Rich Obsidium Deposit
 * Elementium Vein
 * Rich Elementium Vein
 * Ozruk

Prospected from:
 * Obsidium Ore
 * Elementium Ore
 * Pyrite Ore

Ingredient for

 * Accurate Nightstone
 * Defender's Nightstone
 * Etched Nightstone
 * Glinting Nightstone
 * Guardian's Nightstone
 * Purified Nightstone
 * Retaliating Nightstone
 * Shifting Nightstone
 * Sovereign Nightstone
 * Timeless Nightstone
 * Veiled Nightstone
 * Nightstone Choker
 * Fire Prism
 * Transmute: Demonseye
 * Transmute: Shadowspirit Diamond