Stygian Gemstone

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

Acquisition
Quest reward: Loot:
 * Mallyx the Unyielding
 * Stygian Brute
 * Stygian Hunter (possibly a typo of Stygian Hunger)

Uses

 * Four Anguish Gemstones (one of each type) must be traded to Keeper Millzesh in Abaddon's Gate in order to complete the Finding a Purpose quest and recruit Razah in PvE.
 * Four Anguish Gemstones (one of each type) can be traded to the Keeper of Secrets in Gate of Anguish for a Coffer of Whispers.
 * 100 Anguish Gemstones (25 of each type) can be traded to the Spirit of Truth in the City of Torc'qua for a Armbrace of Truth, which can be traded to the Deacon of Whispers for a gold tormented item.