The necklace

You find a necklace in your attic that belonged to your grandmother. She told you years ago about her adventures on a far off planet, but there's one thing she didn't tell you. She never told you about this group of aliens that helped human beings, she never told you the truth behind her necklace.
•This is a Pearl x reader story. The character is also a teenage girl, boys can read if the want.
Enjoy!
Disclaimer: This book is now done, so read and enjoy!