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. After investing tens of thousands of ...

"Black opal is the most amazing gemstone on the planet," he says. "The images that come out of it, especially at magnification, are just totally unexpected." Sometimes this was the only chance to ...

When the holy water accidentally splashes her opal hair clasp, the stone fades to black, leaving it as “colourless as a common pebble.” Lady Hermione collapses in pain and is reduced to ...