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.

High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. Over 90% of black opals come from Australia, but they aren't easy to find.

Opals are formed when water and silicon dioxide ... Rubies can be exceptionally expensive. One ruby, weighing 25.59 carats ...

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 Grand Central Terminal in New York City is the largest train station in the world by area and the number of platforms.

Your car insurance may be expensive because of your driving history, location, vehicle or credit history. Recent insurance claims and violations can increase your rates for three to five years.

Our picks will inspire you to say, "I'll be bag" as you prepare for Terminator-level workouts. These totes, duffels, yoga ...

This model makes it beautifully, but it’s expensive and large. The GE Profile Opal 2.0 with Side Tank produced the highest-quality nugget ice of the models we tested. In our testing, the Opal 2. ...

As billion-dollar disasters like hurricanes Helene and Milton grow more common, many blame global warming. Others say disasters are more expensive because there is more to destroy.

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

Please verify your email address. This item is classified as Ore and can usually be found mining in caverns or rock throughout Hyrule in Zelda: Tears of the Kingdom. Ore items often boast a high ...