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 ...

Gemstones have been a topic of fascination to human beings for centuries, not just for their beauty, but also for how rare ...

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 ...

Brazilian emeralds One-of-a-kind design by creative director Stephanie Wenk Tribute to the pioneering spirit of house founder ...

Colombia produces the world's most expensive emeralds. The highest-quality stones can be worth tens of thousands of dollars per carat. Miners have fought over these treasures for centuries ...