I saw a picture of this ring someone else had modeled and decided to recreate it in Solidworks purely as a 3d modeling exercise.
It's one continuous band nested inside itself and it has zero practical application beyond being an interesting object.
I'm including an STL for printing as well as the original Solidworks file so anyone can see how I made it and modify it if they so desire.
Spools 3D PLA
It will need supports as the band has very slight inclines and angles throughout. I used my Creality ender 5 plus.