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.

A gemstone, billed as one of the largest gem-quality opals in existence, was sold for $143,750 at auction in Alaska on Sunday. For the latest headlines, follow our Google News channel online or via ...

Opals, associated with the zodiac sign Libra, are known for their emotional healing and creativity-boosting powers. Artists often use them to overcome creative blocks, while spiritual practitioners ...

Mysterious "halos" of rock surrounding cracks in a Martian crater may be made of water-rich opal gemstones, a new study suggests. When you purchase through links on our site, we may earn an affiliate ...

What first appeared as precious gemstones unearthed from an opal field in Australia turned out to be the opalized fossils of a previously unnamed dinosaur. The dinosaur was named Weewarrasaurus pobeni ...

While we love the classic gift of jewelry, it’s time to add a new spin to the meaning behind your gem-tastic gift. We’ve created an illustrated guide to gemstones — complete with what each gem ...

The discovery of trace amounts of opal gemstones on the surface of Mars could be a lead to evidence of life on the Red Planet, researchers at the University of Glasgow suggest in a new study. Earth ...