🇺🇸Cool vintage infinity ring

Very interesting silver tone ring with the infinity sign stamped inside. Pretty infinity-ish signs all the way around the band. This was apparently a mood ring, but only parts of it change color. I tried to capture some in the photos, and you can see some of the change to green. It has also shown shades of blue and purple. I don’t know what the metal is, but it’s solid and obviously quality. Smoke free home.