At the Crater of Diamonds State Park, visitors can search for real diamonds — and legally keep whatever they discover. Since opening to the public in 1972, more than 35,000 diamonds have been found. The park sits on an eroded volcanic crater, making it one of the only diamond-producing sites in the world open to the public. Visitors regularly find white, yellow, and even rare brown diamonds. The largest diamond discovered at the site weighed over 40 carats. It’s one of the few places on Earth wh