I found something odd, and I do not know if this is a gameplay oversight, or a text error.
I am in stage 3, (and loving the game, btw,) and while in the fractured void, you can create Purification Spires. The description for these claim
"All Pristine Light crafting recipes are 1.0% more efficient (cost less). "
I have built 14 of these spires around an activated void nexus structure, doubling their effectiveness, and although I can't seem to find the way this stacks, I can see it works. However, no matter what, I see no decrease in the amount of Quintessence it costs to make Pristine Light. Is this supposed to decrease the amount of Quintessence required, or is there a text error?