Aga Khan emerald, world's most expensive green stone, fetches record $9 million at auction
A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it the ...
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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 ...
Business Insider3y
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 Insider2y
Why the official Olympic curling stones are so expensive
A single curling stone certified for the Olympics costs over $600. That makes a full set of 16 stones worth $9,600. Since 2006, every stone used in the Olympic Winter Games has come from Kays of ...
The Express Tribune1d
Aga Khan's 37-carat emerald fetches nearly $9m
A rare square 37-carat emerald owned by the Aga Khan fetched nearly nine million dollars at auction in Geneva on Tuesday, ...
Forbes6y
Stone Veneer Siding Looks Great, But Bad Installations Cost Unlucky Homeowners Thousands
It can be expensive, but it might save them thousands of dollars in repair bills. Anyone considering having stone veneer siding on their home, should ensure it is done in strict accordance with ...
Business Insider India3y
Why Australian 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 ...