Questioner [PENDING REVIEW]
Where did you get the idea for the gemhearts.
Brandon Sanderson [PENDING REVIEW]
So, I wanted-- in the books, I wanted there to be an economic component to the magic, like, something that was based on the money in the world. And I knew I wanted to use the gemstones, but I also knew they would be used up really quickly by the magic, with Soulcasting. So, I built something into the creatures of the world, so that we could renew the gemstones, so they wouldn't all just be gone after a few hundred years.