Tana Clymer, 14, went to the park with her family over the weekend, something her mother Amanda Giordano had wanted to do for some time.
Amanda talked her husband Brian Giordano into taking the family there for fall break.
Tana says she had dug around for about ten minutes after they arrived and uncovered the diamond, but neither she nor her parents had any idea just what she had found until shortly before they were ready to leave the park at the end of the day.
They took the stone to the experts, and as the excitement among the park's staff rose, they realized Tana really had something.
She has dubbed the diamond "God's Jewel," and says she's only told a few friends about it.
She told the Daily Oklahoman her dad keeps telling her not to get her hopes up about the value of the diamond, but she admits -- it's too late.
The park says about 400 diamonds have been found at the park so far this year, but none as potentially valuable as Tana's.
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