So what changed? Why are Chocolate Diamonds so expensive? Diamonds get their color by how they're formed, whether it was a different element that got pulled into the carbon structure. Like boron ...

The auction house sold a 28.86-carat diamond for $2,115,000 in an online auction — the most expensive diamond to ... writes that the diamond, a rare Type 11A, is classified as D-color, meaning ...

A rare Russian pink diamond called the ‘ Spirit of the Rose ’ has set the new world record for the most expensive purple-pink diamond ever sold. The 14.83 carat diamond was auctioned for a ...