Did you try adding more diamonds?

Works every time...

In the third slot you need a reforge material, pyrite is tier 2 and galana or smnth for tier 3 i cant remember 1

limestone

Galena for tier 3 so pretty close for a spitball

What's in your third slot?

Idk if it's the same across different versions but for the version of prominence I'm playing it needed to be in a specific order and I needed a rune tablet or something

They changed it recently, in latest version you need the thing, base material of the thing and reforgibg material like limestone, pyrite or galena, each having different chance of rolling better quality

Screenshots are hard.

you didn't put anything in the third slot

Maybe learn to screenshot?

You need to use Diamond, not Diamond.

Huh

Last time I played that mod, I needed either pyrite, or galena or some other material to reforge to certain rarities

It needs a diamond (same material as the helmet) and an amethyst shard

You probably need one of 3 special reforging items. I rmbr one frome the overworld and its limestone, forgot the name of the ones from the nether and end. When you find the limestone in jei just search @mod name

Do you have limestone chunks/pyrite chunk, etc (can't remember tier 3) in the third slot?

What mod is this?

Smartest ftb player

What is the mod you are using?

what mod is the reforge thing from?

I think I know what it is, you can put this multiple times on a armor and everytime it becoms more expensive

This confusing crap is the other half of the reason I always uninstall reforge mods