来自MSN4 个月
35 Most Valuable Gemstones, From Least to Most Expensive
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 ...
6 Most Expensive Pieces of Jewelry — How Much Would They Cost You?
Jewelry can really pull an outfit together, but is it worth millions? Some say so. Since jewelry can appreciate in price, ...
Business Insider3 年
Why black opal is one of the most expensive gemstones in the world
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 ...
Business Insider3 年
Why pearls, black opal, and chocolate diamonds are so expensive
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.