I have pieces of armor that give me shield against: Fire, Frost, and Poison Damage. I’ve seen but had no use for shield against Normal Damage. But is there any armor that will protect you against Blunt or Piercing Damage? I’ve never seen that anywhere!
I’m sorry to say you that Blunt and Piercing damage don’t exist as shield for any type of Hero gear.
A usuful link is this: http://royal-revolt-2.wikia.com/wiki/Herowhere you can know what type of shield has each type of hero gear