Arkansas State Parks Trip Ideas

Discovering Lamproite at the Crater

Greetings from Crater of Diamonds State Park! Visitors to the Crater of Diamonds can find much more than diamonds here. One of the most common rocks found at the park is also one of the rarest to find beyond the borders of the crater. Lamproite is the volcanic material that erupted from the park’s diamond-bearing pipe around 100 million years ago. Four types of lamproite...