
Imagine stumbling upon a sparkling diamond and realizing that it’s yours to keep. At Crater of Diamonds State Park in Arkansas, this dream becomes reality. This incredible site is the only active diamond mine in the U.S. where the public is allowed to search for and keep any gems they discover. Unlike commercial diamond mines, Crater of Diamonds offers an adventurous, hands-on experience for gem hunters, treasure seekers, and curious visitors alike. But what makes this mine so unique, and why does it allow people to take home whatever they find?
The History of Crater of Diamonds State Park

1. Discovery of Diamonds in Arkansas
- In 1906, a farmer named John Huddleston discovered the first diamonds on his property, sparking a diamond rush in the region.
- The site was officially established as Crater of Diamonds State Park in 1972 after being operated as a commercial mine for decades.
- The park covers 37.5 acres of volcanic soil, one of the few places on Earth where diamonds naturally surface.
2. A Rare Geological Formation
- The park sits on an ancient volcanic pipe, which pushed diamonds to the surface millions of years ago.
- Unlike deep-earth mining, these diamonds do not require extensive excavation, making them accessible to visitors.
- Other rare gems like amethyst, garnet, and jasper are also found in the park’s soil.
How the Mine Works

1. Anyone Can Search for Diamonds
- Visitors pay a small entry fee and can dig, sift, or simply walk around looking for gems.
- The park provides tools for rent, but many visitors bring their own.
- Staff members are available to help identify and verify found gemstones.
2. Keep What You Find Policy
- Any diamond or gemstone you find is 100% yours to keep.
- Some visitors have discovered diamonds worth thousands of dollars.
- The largest diamond ever found at the park was the 40.23-carat “Uncle Sam” diamond, discovered in 1924.
3. Best Methods to Find Diamonds
- Surface searching: After a rainstorm, diamonds are easier to spot due to their shine.
- Sifting soil: Using mesh screens to filter out lighter dirt and uncover heavier diamonds.
- Digging deeper: Serious gem hunters dig trenches to access untouched soil.
Notable Diamond Finds
1. The “Uncle Sam” Diamond

- At 40.23 carats, this is the largest diamond ever found in the U.S.
- It was cut into a 12.42-carat gem and remains one of the most famous diamonds in American history.
2. The “Strawn-Wagner” Diamond

- Discovered in 1990, this diamond was certified as a perfect 0/0/0 rating, making it one of the most flawless diamonds ever found.
- It was cut into a 1.09-carat gemstone and is now displayed at the park’s visitor center.
3. The “Amarillo Starlight” Diamond

- Weighing 16.37 carats, this diamond was found by a visitor in 1975 and later cut into a 7.54-carat gemstone.
Why Are Diamonds So Common Here?
1. A Unique Volcanic Source
- The volcanic activity that formed this area created a kimberlite deposit, a type of rock known to contain diamonds.
- Over millions of years, erosion and natural forces have exposed these diamonds on the surface.
2. No Need for Deep Mining
- Most diamond mines require massive excavation, but at Crater of Diamonds, gems are often found within a few inches of soil.
- This accessibility makes it one of the best places for amateur prospectors to try their luck.
Tips for First-Time Visitors

1. Go After a Rainstorm
- Rain washes away dirt and makes diamonds easier to spot.
- Visitors often report finding more diamonds after heavy rainfall.
2. Bring the Right Tools
- Buckets, shovels, and sifters can improve your chances of finding diamonds.
- The park also rents tools if you don’t have your own.
3. Check Your Finds Carefully
- Many diamonds are small and look like glass pebbles.
- Park staff will help identify whether your find is valuable.
The Economic and Tourism Impact

1. Boosting Local Economy
- The park attracts over 100,000 visitors per year, contributing millions to the local economy.
- Nearby businesses thrive on tourism, offering hotels, restaurants, and gem-related activities.
2. Encouraging Geology and Science Education
- The park is a geological wonder, attracting students, scientists, and hobbyists.
- Educational programs teach visitors about diamond formation and mining history.
The Role of State Parks in Preserving Natural Resources

1. Environmental Protection and Conservation
- The park is maintained under strict environmental protection policies to preserve the natural landscape.
- Sustainable mining practices ensure that the land remains untouched by commercial exploitation.
2. Promoting Sustainable Tourism
- Unlike industrial mining, public access to the park promotes eco-friendly exploration.
- By limiting extraction to small-scale individual searches, the park maintains a balance between tourism and conservation.
How Crater of Diamonds Compares to Other Diamond Mines

1. Commercial vs. Public Diamond Mining
- Unlike De Beers or Argyle diamond mines, Crater of Diamonds is unique in allowing public mining.
- Large-scale diamond mines require heavy machinery and deep excavation, while Crater of Diamonds relies on surface searching and small-scale digging.
2. The Only Mine Where You Keep What You Find
- Other mines sell diamonds at market value, but at Crater of Diamonds, the value of your find is completely yours to keep.
- No permits or licensing fees are required beyond the general admission ticket.
Conclusion: A Treasure Hunter’s Dream

Crater of Diamonds State Park is a one-of-a-kind destination where adventure meets real-world treasure hunting. With a little luck and effort, anyone can walk away with a valuable gemstone. Whether you’re a serious gem hunter or just looking for a fun day out, this unique park offers an unforgettable experience—and maybe even a life-changing discovery!