My daughter loves the book series Warriors by Erin Hunter.  She wanted a moonstone near her bed for dreams of the Thunderclan.  

This is printed using the Bambu Labs P1S. It may say the sizing is too small, but you can change it to any size you need. Included is the original file created in Blender and also the stl file for printing. 

“The Moonstone is a sacred rock in the Warrior Cats world that serves as a connection between Clan leaders and medicine cats, and StarClan. The Moonstone is located in an underground cave called Mothermouth, near Windclan territory, and is found in Highstones and the Twoleg name Devil's Fingers mine.”