As of right now, it is very difficult to get a boss amulet or ring as they are used for currencies, limited bosses and difficulty for bosses. And also the difference between normal amulet/ring and boss amulet/ring are too great. I suggest adding a ring or amulet that has like 1/3 to 1/2 of the stats of bosses amulet/ring. It could be added as a quest item or drops from monsters above X level.