Here’s a look at some of the most expensive gemstones in the world. Topping the list is the Pink Star Diamond, a 59.6-carat oval-cut pink diamond that shattered records when it sold for $71.2 ...

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 ...

Jewelry can really pull an outfit together, but is it worth millions? Some say so. Since jewelry can appreciate in price, ...