The Moonstone Brooch in Dunk

The moon has been used in a lot of brand chapters as a symbol for a variety of related things like being watched over by bird raven. It would be really out of place for Hedge and I'd have a Ruby, right? Like John the Fiddler having amethyst. So you don't have to interpret symbolism that way, but there's also direct clues. But this is less about old gods magic this next clue and more about the magic of light and illusion,. Not really sure if you want to what the origin is, but it's definitely different than the old gods.