In a world there is a king and that king has knights. These knights make use of magic amulets to protect them from supernatural threats: witch spells, manticore venom, werewolf curses, et cetera ad bad magic mojo.
These amulets contain the magic within precious gems such as rubies and sapphires. The gems generally fit easily in the palm of your hand.
My question is- do I have to radically alter traditional plate armor to safely house the gems inside? Not on chains or sewn into clothing but actually housed in the armor so as to be unseen and a part of the armor itself instead of on chains around the neck?
The idea is that greater ranks of knights need to have up to a dozen gems for greater dangers and for several reasons the gems now need to be in the armor instead of chains round the neck. I don't know if I have to make large changes to traditional armor or not in order to both house the gems and keep them reasonably safe from damage.
By traditional armor I mean this.