Armor modification

The armor modification is a number given by the type of armor and enchants the player is wearing. It is added to your base Toughness given by your race.

This is only for what is the piece of armor that makes up the majority of the armor. If two sets are even (i.e 2 iron pieces and 2 diamond piece) that armor confers the higher defense options. Moreover, the armor enchantment must be on the higher defense item in order to be applied to the defense of the armor. These stats do not stack. So each diamond piece with enchants do not add to the defense. If you have three iron armor and one diamond armor, iron armor is used as the modification and only the strongest enchanted piece of armor from the iron armor applies.