Can you make it so you can break something only with a specific item like a special pickaxe.

So I got a dungeon mod and I want to make it so you have to defeat a boss to make a  special pickaxe which is the only item/pickaxe that can break a special shield to get the dungeon loot but can also be used as a pickaxe better than diamond. So I can't figure out how to make it so that the pickaxe is the only thing that can break and damage that shield like if its anything else than the special pickaxe it will be like bedrock wont even start breaking but if it is the special pickaxe it will become a breakable block and break that shield which is considered as a block but doesn't drop anything. So is it possible to make it like that if so then how. Ps it didn't let me make it anything but a general discussion must be a bug.