Quote Originally Posted by Riastrad View Post
Urianger created one in such short notice only after we failed to properly contain the light
Incorrect. He created the auracite before we had even arrived, predicting that Ascians would come to stop anyone preventing the Rejoining. It's part of the reason he was in Il Mheg, since it is apparently the most aether rich region in Norvrandt thanks to the Fae and aether rich regions are necessary to make white auracite. He shows us the auracite when we first reunite with him in the quest "Unto the Truth" and it is the same one that is later splintered by Thancred to stake Emet in place.