Australian Opal Direct has announced its natural Australian opal ring collection featuring rare gemstones from Queensland, ...

One in a billion bones becomes a fossil — even fewer turn into opal. In a pocket of north-western New South Wales, two pioneering women are uncovering relics of our deep past. In a small room of a ...

Forbes contributors publish independent expert analyses and insights. I am the founder of La Patiala, the luxury encyclopedia. Opals are some of the most unique gemstones on Earth. They range from ...

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.