Vordark Crystals are mysterious items that naturally absorb vorsys, or magical energy. This is because they are the scorched blood of a vorwyrm, which is lacking vorsys; the Eari call this antifex. They are very dangerous to magic users, as mishandling them is fatal to magic users. Expending any magical energy within a certain radius can cause the crystal to leech all of it, killing the user. When left alone, these crystals will soak up ambient magical energy over a long period of time. The Eari used vordark crystals to create the Eari Stones, which the Tal Calar wielded during the Great Purge; all the Eari died as a result.
Creation
They were created when the vordragon Gyva drew the blood of the vorwyrm Dekilia and scorched it with fire. These crystals rained down upon the earth.