Material melding item levels

[Yonko]

I was attempting to meld a craftsmanship +6 materia, to my Alchemists head piece, which didn't currently have any materia. But was being told i'd only get +4 from it.

There are caps on how much you can increase each stat. This is true of all gear. http://ffxiv.ariyala.com/Alchemist That has every known stat cap just click on the materia section for the gear you want to meld. It will also figure out materia caps as well.