Resolved Diamond Collection error

[PieroGalante]

I hada problem whit one of the "badges" i currently have 7 diamonds but the page says i have 6.

 

[Barney]

The accolade is to 'Own a Diamond Fighter for 10 different Characters' and your second Annie isn't counting towards the total as you already have one. Basically, you need to own a Diamond version of 10 out of the 16 Characters that the game has.

 

[Bones]

As the above poster stated, you have two Annie's in your screenshot, so only 6 diamond characters.