These pendants are created with the same pieces as the cubes in my origami bracelet. With just one extra fold, you can make a stellated octahedron, I believed it was called an octahedron, I searched images of octahedron and this showed up, but apparently a lot of people make the same mistake. But, thanks to ynze
, I now know that it's called a stellated octahedron. I hope you like it!