Stygian Gemstone

Stygian Gemstones are a type of Anguish Gemstone. They are gold items.

Acquisition
Quest reward:
 * Mallyx the Unyielding
 * Money Back Guarantee

Loot:
 * Stygian Brute
 * Stygian Fiend
 * Stygian Horror
 * Stygian Hunger
 * Stygian Lord
 * Stygian Underlord

Chest:
 * The Stygian Chest that appears after killing the Dreadspawn Maw contains one to four Stygian Gemstone for each party member, one for each of the Lords of Anguish which have been defeated during the current trip through the Domain of Anguish. This amount is doubled in hard mode, allowing up to eight Titan Gemstones to drop.
 * A Coffer of Whispers has a chance of giving you 5 Stygian Gemstones.

Uses

 * Four Anguish Gemstones (one of each type) can be traded to the Keeper of Whispers in Gate of Anguish for a Coffer of Whispers.
 * 60 Anguish Gemstones (15 of each type) can be traded to the Spirit of Truth for an Armbrace of Truth, which can be traded to the Deacon of Whispers for a gold tormented item.