Drops 10 gems of essence each time, no timer on pickup.
Lore & Dialog
As you deal the final blow to the Artifex of the Singularity, it collapses upon itself with a high pitched screaming noise, and a cold voice speaks directly into your mind: "The Master's will shall live on, even as this shell, and all other imperfect vessels of the Master's will, decays into dust. Rejoice that you were in some small way a part of the birth of an eternal consciousness..."