"Oh, you’re going to be mad once you see what I found!" David later worked with park staff to identify and register the gem. Measuring at 3.81 carats, it is the largest diamond to be ...

An amateur rock collector recently hit the jackpot while exploring a state park ... ‘"Oh, you’re going to be mad once you see what I found!’" DeCook decided to name his discovery "the Duke ...

Stirring up some natural sibling rivalry, David told Derek, “Oh, you’re going to be mad once you see what I found!” DeCook put the diamond in his pocket and returned to the park a few ...

he realized the tinfoil-like shine was from a diamond. He said he picked it up and turned to his brother, who was also a regular park visitor, and said, “Oh, you’re going to be mad once you ...

“Oh, you’re going to be mad once you see what I found!” DeCook told his brother, fueling some “sibling rivalry,” according to the park. The diamond — named “The Duke Diamond” by it ...