A listing in the Guinness Book of World Records was followed by a years-long battle over ownership of the Ophir Collection. It’s possible there’s a curse attached to the Ophir Collection, a trove of ...

Discover the top 5 rarest diamonds in the world. Learn what makes these gemstones so unique, valuable, and extraordinary, ...

We call ourselves Marketplace, so part of our job is exploring how marketplaces work, in all their forms. David Brancaccio and the “Marketplace Morning Report” team set out to visit five markets, all ...

The rarity of precious gemstones comes down to the geologic process of their formation. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Sparkling ...