Is it possible to “upgrade” the crafting materials?
My question is as it reads in the title, how do you upgrade the Normal-mode crafting Essence (Subtle) into the Nightmare crafting Essence (Shimmering)?
There are hints on various wikis and forum posts stating that the Subtle Essences can be re-crafted or reforged into Shimmering Essences...but no direct answer as to how I should go about it. I would assume there is a special blacksmithing recipe that you either purchase or acquire from Haedrig in order to craft it but again, I have found nothing of that sort thus far.
To clarify: I know that item levels 1-30 drop Subtle Essences after salvaging, and I know that item levels 31-50 drop Shimmering Essences after salvaging. What I am interested in converting Subtle Essences into Shimmering Essences. Is it even possible, or is this notion outdated (left over from the beta)? Just an incorrect assumption?