The Ericksons got some tips on wet sifting from some regular park visitors at the North Washing Pavilion and, after about an hour of wet sifting, Seth Erickson spotted a gem in the bottom of his screen.
The pair took the find to the park's Diamond Discovery Center, which verified it was a 1.9-carat brown diamond. The park said the diamond is about the size of a pony bead.
The couple named their diamond HIMO, the initials of each of their children.
Officials said 581 diamonds have been registered at Crater of Diamonds State Park in 2022.