When you think of expensive gemstones, what comes to mind? Most people think of the Big Four: diamonds, emeralds, rubies and sapphires. However, it might surprise you to know that there are ...

The reason this mineral is so expensive is that it is only rarely found in larger gem-quality stones. Most serendibite stones ...

According to data from the U.S. Geological Survey, there is significant variation when it comes to how much mineral wealth states possess. Nevada has the most mineral wealth of any state ...