Ionic Crystal

Give to McCabe at Ward 13 to craft the Energy Wall weapon mod.
Find in the Seated Colossus at the Unnamed Tower in the Timeless Horizon on N'Erud.
Lore
Ionic crystals are common in nature—salt, for example—yet each has its own unique conductive and absorptive properties. These crystals, for example, seem to muffle kinetic energy, hardly bouncing even when dropped.
Seems like that could be a useful property.
"All Drzyr acquire a basic education in molecular and atomic physics, creating new and exciting compounds as early as their first half-century of life. To the Drzyr, rearranging protons and electrons is as simple as reorganizing one's bedchambers."