The Gold Sheen Sapphire, recognized as the second-rarest gemstone in the world, is generating unprecedented excitement and demand. Trade shows in America and Hong Kong are frequently overwhelmed with ...
Unique in its kind, the rarest gemstone in the world is called kyawthuite. The unique specimen is currently housed in the Natural History Museum of Los Angeles County. Where it came from and its ...
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 ...