However, it might surprise you to know that there are precious stones that are rarer and more expensive than these popular ones. A number of the most valuable gemstones are new discoveries that ...

Crystals are admired for their beauty and healing properties. Rare stones like Blue Diamond, Pink Star Diamond, and Jadeite ...

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 ...

High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. Over 90% of black opals come from Australia, but they aren't easy to find.