Ancient Powder From Different Sources

I have a stack of two from Iria Treasure Event and I just got one from an ancient monster, I can't make them into one stack. Has anyone else noticed this with powders from other places?

I think it's because the Ancient powder that comes from mobs are of a lower resale value than the ancient powder that comes from other sources.

Well, yes. They aren't the same item, they just look the same/have the same effect. But it'd be helpful to know which ones stack with which so we can make a note on the page.

As far as i know. The ancient mob ones are the only ones that can't stack with any of them. The only powders i've never tested are the ones from G8 that the traveling salesman sold.

You mean Pierrick *spazztasic reaction >w<*

...moving on. They don't stack with the ones from Pierrick.