Opals may have been around for thousands of years, but they’re having a major resurgence in the jewelry world right now. Chairish included opals as one of its top trend predictions for 2025, and ...

Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.