How to Find Pounamu in Nature: A Fossicker's Guide

Where to Start Looking

Pounamu forms deep in the Southern Alps and is carried down to accessible riverbeds and coastal areas by erosion and river flow over thousands of years. The major West Coast rivers, particularly the Hokitika and Taramakau, are the most productive and accessible starting points for modern fossickers, with numerous public access points and established collecting areas.

For the full geological story of where and why pounamu forms where it does, see our guide on where pounamu is found. If you're after specific named beaches and locations to search, our guide to which beaches you can find pounamu covers that ground in detail.

The Arahura River: Sacred Ground

The Arahura River holds profound spiritual and cultural significance to Ngāi Tahu, the iwi of the West Coast. According to Māori kōrero (tradition), this river is the source of the finest pounamu, and the stone itself is a taonga (treasure) of immense mana (prestige). For this reason, the Arahura River and its immediate surroundings are considered tapu (sacred), and collecting pounamu there is not permitted.

This restriction reflects the deep relationship between Ngāi Tahu and pounamu, and respecting it is essential to honouring Māori values and the cultural heritage of the stone. Visitors are welcome to view the river and learn its story, but collecting should take place in other designated areas instead. This boundary teaches an important lesson: pounamu is not merely a commodity, but a living connection to tūpuna (ancestors) and the land itself.

Quick Field Checks

Identifying genuine pounamu among river rocks comes down to a handful of quick, tactile checks. Pounamu is notably dense and heavy for its size compared with ordinary greywacke, and its surface has a distinctive waxy, smooth feel, almost like polished soap, rather than the grittier texture of common river stone. One check specific to fossicking that's worth knowing: tap the stone gently against another rock. Genuine pounamu tends to produce a clear, bell-like ring, whereas an ordinary river stone makes a dull thud.

These field checks are a useful first filter, but they aren't conclusive on their own, and lookalikes such as serpentine and greywacke are common on West Coast rivers. For the complete checklist, including colour, hardness, and how to spot common imitations, see our full guide: How to Tell if Pounamu Is Real. For more on the different natural varieties you might find, see Types of Pounamu.

Responsible Collecting Practices

Collecting pounamu is a privilege that comes with responsibility to future generations and to the landscape. Take only what you can personally use or reasonably gift, avoid stripping riverbeds of pounamu for commercial resale or export. Leave the riverbed intact: don't dig deep holes or overturn large rocks and leave them displaced. Collect from naturally sorted deposits where pounamu has already accumulated, rather than creating new disturbance.

Always check local regulations before collecting; some areas require permits or have seasonal restrictions. Respect cultural sites and avoid collecting in areas marked as tapu or with signage indicating they are closed to collection. If you encounter Māori cultural markers or hear kōrero about the spiritual significance of a place, honour that knowledge. Pounamu populations are finite, and thoughtful collection helps ensure these taonga remain available for future generations to discover and cherish.

Guided Fossicking Tours: The Reliable Path

For most people, joining an organised pounamu fossicking tour is the most rewarding and reliable way to find genuine greenstone. Professional guides know the productive river sections, understand current conditions, and can teach identification techniques in real time. Tours are legal, fully permitted, and often include equipment, instruction, and the expertise to navigate both the geology and the cultural dimensions of pounamu. Many guides are local experts or have Māori connections and can share deeper kōrero about the stone's significance and history.

Tours range from half-day river searches to longer expeditions, and they cater to all experience levels. The cost is modest compared with the time you might spend learning independently, and the success rate is far higher. Guides can also explain the ecology of the rivers, the responsible collection practices specific to each location, and the best conditions for fossicking, including water levels, seasonal timing, and weather. Whether you find large specimens or small fragments, a guided experience deepens your appreciation for pounamu and helps ensure you leave the landscape in better condition than you found it.

Finding pounamu in nature is an adventure that combines geology, patience, and cultural respect. Whether you search independently along the Hokitika River or join a guided tour, the experience connects you to New Zealand's natural and human heritage. Read more: What Is Pounamu?