The thing about being the creator of a story, is that you have more knowledge about the world that you create than anyone else does. You've become so accustomed to the characters in the world and that natural laws of it, that even mundane or common things about your story are completely unknown to the reader. Where on the other hand you know everything with an oracle like precision.
My world of magical gemstones obey specific rules, and I can't just dump exposition about how they function onto the reader. To me, the items are exacting relics that act a specific way when interacted with a specific way. To the reader, the objects are a bizarre esoteric stone with seemingly unknown properties. It is left up to the reader to interpret how the rules of a specific world work, or how a specific character thinks or interacts.