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.

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.

Black opals are rarely completely black ... Madagascar and Tanzania. The Most Expensive Padparadscha in the World The most expensive padparadscha sapphire in the world sold at a Christie's ...

In this list, Forbes Advisor rounds up the 10 public companies that have the most expensive share prices on major U.S. stock exchanges.

But adoption fees can be more than $5000 for some breeds, making them the most expensive dog breeds ... silver, cream, and black. Height: 25 to 27 inches Weight: 50 to 60 pounds ...

Auto insurance premiums are most expensive for teens and young adults because these age groups have a higher risk of car accidents and violations. Teenage drivers tend to pay the most for car ...

Your brain might not automatically jump to "ornate" or "expensive," given the relative simplicity of Kate Winslet's silk, ...

The Senate races are among the most expensive, all ranking within the top ten according to figures from OpenSecrets. Here are the Senate races ranked from the most to least expensive. The figures ...

Read on to find out the most expensive ZIP codes in the United States in 2023 as well as trends and themes these places share. The Most Expensive ZIP Codes in America Using data from Zillow’s ...