While, yes, emeralds tend to be the most popular green gemstone, they’re certainly not the only one and not even the most expensive by carat weight. Some of the stones on our list, such as peridot or ...

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

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 ...

At the time it was believed to be the most expensive gemstone bought at auction and was sold to the well-known British dealer Laurence Graff.

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. After investing tens of thousands of ...

Fancy color diamonds are among the rarest and most valuable gemstones. Diamonds in the normal color range are colorless through light yellow and are described using the industry’s D-to-Z color-grading ...