Even if your birth month isn't October, you can still rock opal on your engagement ring. It was once believed that opals contain lightning from the sky [1] because of their kaleidoscopic colors. While that may not be true, there's no other gem quite like it. Whether you're a unicorn-lover [2] or an unconventional bride looking to catch eyes [3], opal engagement rings are a mystical-looking choice that pair nicely with both modern and vintage styles. See 25 gorgeous examples ahead.
