Since the North and South fought over the star, the official history taught in Skagastad and Oakhaven is that the crown broke into two main pieces—one for the Jarls, one for the Elves.
The Lore: A banned historical text floating around Duskborder suggests the Crown actually broke into three primary shards. The third shard represents the "Mortal Mandate"—the right of the common folk, pioneers, and non-elven/non-jarl peoples to rule themselves.
The Impact: Factions like the Grand Guild of Artisans in Brambleheart or the Sovereign Wardens of Stormwatch Bay might secretly hold this third piece, using its passive magic to maintain their independence from the two superpowers.