A new record for most expensive diamond was set by a 12.03-carat blue diamond sold at auction for $48.4 million. The Blue Moon diamond weighs in at 12.03 carats and Sotheby’s auctioneer David ...

They say diamonds are a girl’s best friend, but they also tend to be the most expensive type of friend there is.

Here’s a look at the most expensive diamonds ever purchased and their current owners. Also, check out the most expensive pieces of jewelry.

Hellin Kay 1 World’s Most Expensive Colored Diamonds Pumpkin Diamond ($3 million) ...

Travis Kelce just proposed to Taylor Swift with a diamond engagement ring reportedly worth $1 million.

On Wednesday, the ‘Blue Moon’ diamond sold for a whopping $48.4 million, making it the world’s most expensive diamond.