DeCook decided to name his gem The Duke Diamond, after his dog. The 3.81-carat diamond has a metallic, copper luster and a blocky, triangular shape. It is the largest found at the park since the 7 ...

According to Arkansas State Park, many visitors choose to name the diamonds they find at the park. DeCook decided to name his gem The Duke Diamond, after his dog. The 3.81-carat diamond has a metallic ...