From Tanzanite to Benitoite, this article unveils the five rarest gemstones in the world that hold more than vibrant colors.

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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 ...

The US Mint initially made this coin with a composition consisting of 90% silver. Specimens with it’s intricate design well ...

The Sotheby’s Magnificent Jewels sale achieved £23.5m this month, with rare gemstones and white diamonds in high demand ...

It is one of the rarest gemstones on Earth ... believed to be the world's only source of Tanzanite. A year later, the government reported an increase in revenue in the mining sector and attributed ...