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.

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 ...

People buy the most expensive watches in the world for various reasons—as a statement of success, an appreciation for precision engineering, or simply as heirlooms that transcend generations.

Let's explore the world's most expensive paintings and their impact on art history, from Da Vinci's $450.3 million 'Salvator Mundi' to Picasso's $174 million 'Les Femmes d'Alger'. "Salvator Mundi ...

As The Food Programme explores in ‘Britain's Secret Saffron Story’, the red spice is one of the world’s most expensive ingredients ... in the Caspian and the Black Sea.

Some Congressional races are seeing more spent by super PACs and other outside groups than the candidates themselves. Use the options below to see the most expensive races based on either campaign ...

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 ...

Many movies that spent a ton of cash still end up turning a big-time profit. However, the stakes are definitely higher. Here are the 30 most-expensive movies ever made, adjusted for inflation.

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 ...

The most expensive states for millionaires tax high earners at high rates. (And if you fall into the top federal income tax bracket, the IRS will tax some of your earnings at the 37% rate.) ...

Singapore, Marina Bay, Garden By the bay, botanic garden, Supertree Grove and Cloud Forest Of the top 10 most expensive cities for expats, half are located in Western Europe, Mercer points out ...