Throughout history, gemstones have been symbols of opulence, power, and mystery. Among the countless gems found in nature, a ...

O n a Wednesday morning in October 2014, in a garage in the woods of Pennsylvania, Tommy Trotta tried on some new jewelry: a ...

Alexandrite was first discovered in Russia and named for ... The 18.04-carat Rockefeller Emerald was the most expensive emerald per carat ever sold — at $5.51 million, or $305,500 per carat.

Alexandrite lasers are a type of solid-state laser that utilize the alexandrite crystal as the gain medium. These lasers are known for their tunability and efficiency, making them suitable for a ...

The list of the 10 most expensive lots sold at auction this past December includes a few surprises, like Old Masters and ...

Supreme Darkness (SUDA) is the latest set released in the Yu-Gi-Oh! TCG on Jan. 24, adding a bunch of support for several archetypes. But not all cards are equal, as some sell at historically high ...

Here is a closer look at the top 9 most expensive vegetables in the world. Some of these vegetables are highly prized for their flavor, rarity, or the effort it takes to grow them. You may be ...

Not to be confused with Australia, the Austrian passport is the tenth most expensive passport in 2025, according to data from Compare the Market. In total, it costs $125.37 to acquire a 10 ...

The top spot clocks in at more than $300 million, while the least exorbitant of the most expensive homes for sale on the planet tallies up at $105 million.

The engineering task is one reason why the cost of the project is expected to be as much as 1trn yuan ($137bn), which would make it the most expensive infrastructure project in the world.