Hi,
the stats of an item you can only edit if it is a unique pice.
In the editor open the stats manager and look in origin/shared/stats/armor there yon find all uniques
I made a mod where you can add new stats to an armor piece or ring/amulet
Atm there you can add resistance to all armor included rings and amulets. Also you can add intelligence, strength and finesse to rings and amulets.
Cu
Thalon