Coffer of Whispers

The Coffer of Whispers is a reward given out by a Keeper of Whispers in the Gate of Anguish, in exchange for one of each four Anguish Gemstones (1 Stygian Gemstone, 1 Torment Gemstone, 1 Margonite Gemstone, 1 Titan Gemstone).

The nature of this reward is currently unknown.