The Square Star Ring from "Guess" music video, by Charlie XCX and Billie Eilish
Find the Square Ring with Star here!
I looked long and hard for the ring, but it turns out, I can make my own. So here you can see images of it, and purchase in silver, or gold. https://www.metalwendler.com/wedding-bands/square-ring-star
Starting at $225, it is a decent purchase and looks fly as hell. Billie if you are reading this, I will make you a gold one!