Can I detail this writing a bit?
When the lost souls of the dead wander into her lusterous cavern, she revives them as gem versions of themselves. The living stones cannot leave the cave in which they will forever roam. All wandering souls lose their memories and idea of the lives they led before, slowly, until they have served the Queen for long enough to mindlessly work without any idea of what is happening around them or what they just did. There is no way for the gem-souls to regain their memories. The Queen's favorite dispicles recieve earrings crafted by the Queen herself. The earrings give back the person's idea of who they were. She is as old as the first splinter of diamond to form.
She is the Demon Queen of Gems.