How to Care for Pounamu: Cleaning, Wearing and Storage
Pounamu is one of the most durable stones in the world, but a piece of greenstone jewellery still deserves care. Whether you’ve been gifted a pendant, inherited a family tāonga, or recently purchased a carving, knowing how to look after pounamu properly will ensure it remains beautiful — and meaningful — for a lifetime.
This guide covers the essentials: how to clean pounamu safely, the best way to wear it, and how to store it when it’s not being used. The good news is that pounamu care is straightforward — the stone asks very little, and rewards attentiveness with a lasting, deepening beauty.
How to Clean Pounamu Greenstone
Pounamu is best cleaned with fresh water and a soft cloth. After wearing, a gentle rinse removes any sweat, salt, or oils that have accumulated on the surface. Pat the stone dry with a lint-free cloth — avoid rubbing, as abrasive cloths can dull the polished surface over time. For stubborn grime around a carved cord or mount, a soft toothbrush with warm water works well.
Avoid using chemical cleaners, detergents, or ultrasonic cleaners on pounamu. These can affect the cord or mount rather than the stone itself — but the risk isn’t worth taking. Similarly, avoid exposing pounamu to chlorine (swimming pools) or salt water for extended periods, as these can deteriorate natural fibre cords and metal fittings. (read more: What Is Pounamu?)
Wearing Pounamu: The Best Way to Honour the Stone
In Māori tradition, pounamu is meant to be worn close to the body. The warmth of skin contact is said to bring the stone to life — and over time, a well-worn piece develops a subtle patina, a softness and depth that comes from years of contact with its wearer. This is considered a mark of the piece’s history and a sign it has been properly honoured.
Most pounamu pendants are worn on a cord rather than a chain, which allows the stone to sit naturally against the chest. Check your cord regularly for signs of wear or fraying, especially at the knot near the stone. Many carvers offer re-cording services, and replacing a worn cord is far better than risking the stone being lost. (read more: Pounamu Designs and Meanings)
Protecting Pounamu from Damage
Although pounamu is classified as a tough stone, it is not indestructible. Its primary vulnerability is to sharp impacts on hard surfaces — dropping a pounamu pendant onto tiles or concrete can chip or crack even a well-formed piece. Take care when working with your hands, cooking, or exercising, and consider removing a pendant if there’s a meaningful risk of impact.
Pounamu is also sensitive to sudden temperature changes. Avoid leaving a piece in direct sunlight for extended periods, or exposing it to heat from steam or hot water. These conditions won’t harm the stone itself, but they can cause natural fibre cords to shrink or weaken unexpectedly. If a piece has a silver or gold mount, avoid contact with perfume, hairspray, or sunscreen, which can tarnish the metal.
How to Store Pounamu When Not Being Worn
The best way to store pounamu is wrapped in a soft cloth or placed in a padded pouch, away from other jewellery that could scratch its surface. Many carvers supply a small bag or box with a new piece, and these are ideal for storage. If you’re storing pounamu for an extended period, a cool, dry environment is preferable to humid or warm conditions.
Avoid storing pounamu loose in a jewellery drawer alongside harder stones or metal pieces, as these can scratch the polished surface over time. If the pendant has a cord, coil it loosely before storing to avoid kinks that weaken the fibres. A piece stored carefully between wearings will remain in excellent condition indefinitely. (read more: How to Tell if Pounamu is Real)
Pounamu Resources
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Caring for Pounamu Cords and Mounts
Most pounamu pendants are suspended on a natural fibre cord — traditionally made from muka (processed flax fibre) or synthetic alternatives. Cords are the most vulnerable part of a pounamu piece, and regular inspection is important. Check the cord where it passes through the stone’s drill hole, as this is where friction wear is greatest.
If a cord shows any fraying, stiffening, or discolouration, replace it before it breaks. Many pounamu carvers and jewellers offer re-cording services for a modest cost, and some provide replacement cords with new pieces. A snapped cord in the wrong place can mean losing an irreplaceable stone, so this is one area of pounamu care that genuinely cannot be neglected.
When Pounamu Chips or Gets Scratched
Despite pounamu’s toughness, chips and scratches can happen. A light surface scratch on polished pounamu can sometimes be buffed out by an experienced carver or lapidary, and small chips along an edge can often be re-shaped and re-polished without significantly altering the piece. If a piece is damaged, consult a professional carver rather than attempting DIY repairs.
For pieces of significant personal or cultural value — especially inherited tāonga — any restoration work should be undertaken carefully and by someone with experience working with pounamu specifically. The stone’s cultural significance means that how it is restored matters as much as the technical quality of the work.
Pounamu is a stone made to last. With basic care — gentle cleaning, sensible wearing habits, and proper storage — a well-looked-after piece will outlast its owner by generations. Treat it with the respect it deserves, and it will repay that care with a deepening beauty and presence over time. (read more: Types of Pounamu)
Frequently Asked Questions About Caring for Pounamu
How do you clean pounamu greenstone?
Clean pounamu with fresh water and a soft cloth. A gentle rinse after wearing removes sweat and oils; for harder-to-reach areas around a cord or carving, use a soft toothbrush with warm water. Avoid chemical cleaners, detergents, and ultrasonic cleaners, as these can damage cords and mounts even if they’re unlikely to harm the stone itself.
Can you wear pounamu every day?
Yes — in fact, wearing pounamu daily is encouraged in Māori tradition. The warmth of skin contact is said to bring the stone to life, and a well-worn piece develops a subtle patina over time that is considered a mark of its history. Just be mindful of activities that risk impact on hard surfaces, and check your cord regularly for wear.
How should pounamu be stored when not being worn?
Store pounamu wrapped in a soft cloth or in a padded pouch, away from other jewellery that could scratch the stone. Avoid warm or humid environments for long-term storage. Many carvers supply a storage bag or box with new pieces — these are ideal for keeping the pendant protected between wearings.
Can pounamu get wet?
A brief rinse in fresh water is fine — it’s the recommended cleaning method. However, prolonged exposure to chlorine (swimming pools) or salt water can deteriorate natural fibre cords and metal mounts over time. It’s best to remove a pendant before swimming in pools or the ocean, even though the stone itself is unaffected by water.
What should I do if my pounamu pendant gets chipped?
Consult an experienced pounamu carver or lapidary rather than attempting repairs yourself. Minor chips and surface scratches can often be re-shaped and re-polished without significantly altering the piece. For inherited or culturally significant tāonga, choose a restorer with specific experience working with pounamu.
How often should I replace the cord on a pounamu pendant?
Replace the cord as soon as it shows any signs of fraying, stiffening, or weakening — especially at the point where it passes through the drill hole in the stone, where wear is greatest. Many pounamu carvers and jewellers offer re-cording services at modest cost. A snapped cord can mean losing an irreplaceable piece, so regular inspection is genuinely important. (read more: What Is Pounamu?)