Josh Lanik was on vacation with his family when he found a brandy-colored gem at Crater of Diamonds State Park in Arkansas.
The 36-year-old teacher from Hebron, Nebraska put the treasure in a bag with the other finds his family had made that day.
Lanik and his family spent two hours looking through the park's 37.5-acre diamond search area on July 24.
CNN reports that before leaving the park, they stopped by the Diamond Discovery Center to see what treasures they had found.