Visitors discover a rare chance to keep what they find at Crater of Diamonds State Park in Arkansas, where the crater soil is the only place in the world you can search for real diamonds and keep them. This working park offers a hands on geologic experience that turns a simple family outing into a genuine treasure hunt.
Unlike most gem sites, the public is invited to hunt, dig, and screen the diamond-bearing volcanic crater field, making it a standout destination for rock hounds, families, and first time prospectors alike. Below is a quick reference to help you plan a visit and understand the site before you go.
| Topic | Details | Visitor Relevance | Key Takeaway |
|---|---|---|---|
| Location | Murfreesboro, Arkansas, USA | Central Arkansas, easily reached from major highways | Direct access to the only diamond producing crater open to the public |
| Geologic Origin | Eocene era volcanic crater (diatreme) | diamonds brought up from mantle depthsRocks and diamonds exposed at surface, no deep mining required | Visible evidence of ancient explosive eruptions |
| Search Methods | Surface searching, digging, screening, and sluicing | Tools and techniques available onsite or bring your own | Multiple approaches suit families, hobbyists, and serious prospectors |
| Find Rules | Visitors may keep all diamonds found | No gate fees for diamond retention, paid site access only | Personal discoveries become keepsakes or sellable rough |
Geologic History of the Crater
The crater formed roughly 95 million years ago as a rare type of volcanic pipe called a diatreme, where superheated gas blasted rock and mantle material upward. Diamonds crystallized in the mantle and were carried to the surface within this violent eruption, eventually settling in the surrounding soil.
Key Events in Crater Formation
- Deep mantle source brings diamonds toward the surface
- Explosive eruption creates the crater and fractures the surrounding rock
- Erosion exposes diamonds in the weathered volcanic soil
- Ongoing weathering continues to reveal new stones each season
How Diamonds Reach the Surface
Originally formed under extreme pressure and temperature, diamonds were transported upward through the crater pipe within magma that fragmented into dense, diamond-bearing rock called microbreccia. Over millions of years, erosion wore away the softer rock, leaving the tougher material and diamonds concentrated near the surface.
Weathering and Concentration
Today, active weathering of the volcanic deposits liberates diamonds, which are then deposited in soils and gravels that visitors can screen through. This natural concentration process means that even modest digging can reveal stones that once resided hundreds of kilometers below the crust.
Practical Visiting Information
Planning a trip to Crater of Diamonds State Park involves checking seasonal hours, weather conditions, and personal goals for the visit, whether that means finding a keepsake diamond or simply experiencing the landscape. Preparation helps ensure efficiency and enjoyment during search time.
Visitor Checklist
- Confirm park hours and any seasonal restrictions
- Bring or rent appropriate screening tools and gloves
- Wear sturdy footwear and sun protection
- Carry water and plan for outdoor exposure
Search Methods and Techniques
Visitors use a combination of surface searching, digging, and screening to locate diamonds, with the soil often dampened to improve visibility of shiny stones. Understanding where to focus efforts within the designated search area increases the likelihood of discovery without unnecessary effort.
Effective Prospecting Tips
- Work near plowed fields where soil is turned over
- Look for diamonds on slopes where water concentrates heavy minerals
- Screen material carefully using a grid or sieve system
- Check crevices and pockets in volcanic rock by hand
Responsible Park Use and Stewardship
Protecting the long term diamond potential of the crater requires thoughtful behavior from visitors, including proper filling of test holes, waste management, and respect for park rules designed to balance access with preservation.
- Minimize disturbance to vegetation and wildlife habitats
- Backfill excavated areas to the original ground level>
- Dispose of trash and recycle screened materials where possible
- Share experiences responsibly and encourage ethical collecting
FAQ
Reader questions
Can visitors really keep diamonds they find at the park?
Yes, Arkansas law and park policy allow visitors to keep any diamonds they discover in the designated search area, making each find personally and potentially financially valuable.
What tools are recommended for diamond hunting at Crater of Diamonds State Park?
Most visitors bring shovels, screens, and buckets, while the park offers rentals for screens and wheelbarrows; gloves and sturdy containers help protect finds and improve handling efficiency.
Are diamonds found at the park graded or certified?
Rough diamonds removed by visitors are not automatically certified, though many choose to submit stones to gemological labs for grading, identification, and valuation after discovery.
Is there an ideal season for diamond hunting at the crater?
Spring and fall are often preferred for comfortable conditions and easier soil screening, while wet weather can expose new stones but may make searching physically more challenging.