Most bridesmaid gifts end up in a drawer. The silk robes get worn once. The personalized tumblers collect dust on a shelf. The gift cards get spent on groceries. None of that is a bad thing—but if you want to give your bridal party something they’ll reach for years from now and still think of you, jewelry is the answer—specifically, gemstone earrings. There’s a reason...

Jewelry often follows trends. Certain colors rise in popularity, new shapes dominate display windows, and social media shifts attention from one gemstone to another. Yet every so often, a piece appears that does not rely on fashion cycles to hold its value. Black Fire opal earrings belong to that rare category. They are not loud in a conventional sense, yet they command attention in a...