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.

The shinier the pearl, the better. Black opal is one of the rarest gemstones in the world, sought after for its seemingly infinite display of colors, compared to common opal, which is usually one ...

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 ...

One significant study reexamined the structure of opal-A, revealing that it consists of different types of nanospheres and has a poorly crystalline nature. Using synchrotron X-ray diffraction and ...

Biwin’s new Black Opal OC Lab Gold Edition DW100 memory kit is built for computing setups that need a lot of memory and quick data transfers. The kit comes with four 48 GB modules, giving a ...