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A promise ring is a ring given as a symbol of a personal commitment — most commonly a serious relationship commitment that is meaningful but does not carry the formal weight of an engagement ring or a marriage proposal. The promise ring is one of the most misunderstood pieces of jewellery in New Zealand, primarily because it sits between two better-defined categories. An engagement ring has a fixed meaning understood by everyone. A casual gift has no particular meaning. A promise ring sits in the space between: more significant than a gift, more personal than a fashion accessory, but not carrying the formal commitment of an engagement. Understanding what a promise ring is and is not helps both the giver and the recipient know exactly what they are giving and receiving. What a Promise Ring Means A promise ring carries whatever meaning the giver and recipient agree it carries. This is what distinguishes it from an engagement ring, whose meaning is fixed, and from most other jewellery, which carries no specific meaning at all. In most relationships in New Zealand, a promise ring represents one of the following commitments: A pre-engagement commitment: A serious relationship where both people are committed to each other and see a future together, but are not yet ready to formally engage. The promise ring acknowledges the seriousness of the relationship without creating the social expectation of an imminent wedding. A long-distance pledge: A physical symbol of commitment given when two people must be apart for an extended period, so the ring serves as a daily reminder of the person and the relationship while separated. A relationship milestone: A mark of a significant point in a relationship, such as a first anniversary or a moment of declared mutual commitment, that both people want to recognise with something more lasting than a dinner or a trip. A personal vow: A ring given to oneself or to mark a personal commitment of any kind, including a religious purity pledge, a personal goal, or a meaningful private promise. In this context, the ring has no romantic element at all. None of these meanings is more correct than the others. The meaning is established between the people involved, and no external definition applies. A promise ring is honest in a way that engagement rings sometimes cannot be. It says: I am committed to you, in the way and to the degree that I am committed, right now. Not more. Not less. That honesty is often more meaningful than a formal gesture made before either person is ready for it. Promise Ring vs Engagement Ring — The Key Differences Factor Promise ring Engagement ring Meaning Personal and agreed between giver and recipient Fixed: a formal commitment to marry Occasion Given at any meaningful moment, no formal proposal Given with a formal marriage proposal Finger Usually right hand ring finger (no fixed rule) Left hand ring finger (NZ and most Western countries) Social expectation None — no announcement or wedding date implied Wedding is expected to follow Typical scale Smaller and less elaborate than an engagement ring Often the most significant ring a person receives Cost range NZ $300 to $2,000 NZD typically From $999 NZD at TJ Diamond, often $3,000 to $10,000+ Which Finger Does a Promise Ring Go On? There is no fixed rule for the finger a promise ring is worn on, which is one of the most common questions people search for. The most practical and widely adopted approach in New Zealand is the right hand ring finger, for two reasons: it keeps the left hand ring finger available for a future engagement ring without creating confusion, and wearing a ring on the right hand ring finger has a clear visual meaning in most social contexts — it says 'this ring is meaningful but it is not an engagement ring.' Other options that many people in NZ choose: Left hand ring finger, worn before engagement — the ring moves to the right hand when an engagement ring takes its place on the left. Middle finger of either hand — a neutral choice with no strong social meaning attached, suited to people who do not want the ring to invite questions. Right hand middle finger or index finger — equally valid and entirely personal. The most important factor is that the finger feels right to the person wearing the ring, and that both the giver and recipient understand what the ring means regardless of which finger it occupies. When to Give a Promise Ring There is no rule about timing. A promise ring is appropriate whenever the commitment it represents feels genuine and the giver wants to mark it with something physical and lasting. Some common moments in NZ relationships: Before a long separation — one or both people leaving for work, study, or travel overseas. At a meaningful relationship anniversary — the first, second, or third anniversary, when the relationship has become serious but neither person is ready to propose. When discussing the future together seriously for the first time — a shared acknowledgment of mutual intent without the formality of an engagement. As a Valentine's Day or birthday gift that carries more weight than a typical gift. At any point where both people feel the relationship deserves a physical symbol of their commitment. A promise ring is not appropriate as a substitute for an engagement ring when one person wants to propose and the other is not ready — this use tends to create rather than resolve misunderstanding about the relationship's direction. Does a Promise Ring Need a Diamond? No. A promise ring can be any ring with any design. The most appropriate promise ring is one that suits the recipient's taste and feels like fine jewellery without being mistaken for an engagement ring at scale. A slim plain 18ct gold band with an engraving on the inside — initials, a date, a short phrase — is among the most timeless promise ring choices. A simple solitaire with a small diamond or the recipient's birthstone reads as clearly fine jewellery and carries personal meaning through the stone choice. A stackable ring designed to be worn alone as a promise ring and later alongside an engagement ring is a practical choice if the giver expects an engagement to follow. A ring with a specific design motif — a knot, an infinity shape, a simple geometric form with personal resonance — is appropriate if that motif carries meaning for the couple. The metal should match or complement the recipient's other fine jewellery. TJ Diamond handcrafts all rings in 18ct gold as standard — yellow, rose, or white gold — and platinum, giving promise rings the same material quality as any engagement or wedding ring from our Auckland studio. Promise Ring Styles at TJ Diamond A plain or engraved 18ct gold band is the most classic promise ring choice. For engraving options, see our wedding bands collection — many wedding band styles work equally well as promise rings, particularly our plain and lightly detailed bands which include free engraving. For a promise ring with a small diamond or gemstone centre, our engagement ring collection includes solitaire styles at various scales that are appropriate as promise rings as well as engagement rings. The smaller end of our solitaire range works particularly well in this context. TJ Diamond also creates fully bespoke promise rings to order in our Auckland studio. If you have a specific design in mind, a particular stone or metal combination, or an engraving you want, we work from your brief. For more on the distinction between a promise ring, an engagement ring, and a wedding band, see our article what is the difference between an engagement ring and a wedding ring. For guidance on which finger the engagement ring goes on when that time comes, see what hand does your engagement ring go on?. Contact our Auckland team to discuss a promise ring design, a bespoke commission, or to arrange a consultation at our studio or via video call. There is no commitment required to make contact, and we are happy to help with designs at any scale and any budget. Frequently Asked Questions Q1: What is a promise ring? A promise ring is a ring given as a symbol of a personal commitment between two people, without carrying the formal meaning of an engagement ring. The commitment represented can vary: most commonly it symbolises a serious relationship commitment that precedes engagement, a mutual pledge to remain together while circumstances keep two people apart, or a personal vow of any kind that one person chooses to mark with a piece of jewellery. A promise ring does not imply that a marriage proposal is coming, though in many cases one does follow later. It is simply a physical expression of a promise — whatever that promise means to the people involved. Q2: What is the difference between a promise ring and an engagement ring? An engagement ring carries a specific and universally understood meaning: a formal commitment to marry. When someone gives an engagement ring and the other person accepts, both people understand that a wedding is intended. A promise ring carries no such fixed meaning. It symbolises whatever commitment the giver and recipient agree it means — which can range from a pre-engagement promise to a simple expression of love and dedication. Promise rings are typically less expensive than engagement rings, are given without a formal proposal, are worn on different fingers (usually the right hand ring finger to distinguish them from an engagement ring), and carry no social expectation of a wedding date or announcement. Q3: Which finger does a promise ring go on? There is no fixed rule for which finger a promise ring is worn on. The most common choice in New Zealand is the right hand ring finger, which keeps the left hand ring finger available for a future engagement ring and wedding band without creating confusion about the ring's meaning. Some people wear a promise ring on the left hand ring finger before they are engaged, and move it to the right hand when the engagement ring takes its place. Others wear a promise ring on the middle finger or another finger entirely, particularly if the ring was given as a personal vow rather than a relationship commitment. The finger choice is entirely personal and should feel meaningful to the person wearing it. Q4: When should you give a promise ring? A promise ring is appropriate whenever a commitment feels meaningful enough to mark with a physical symbol, and the giver wants to give something more significant than a casual gift but is not ready or does not intend to propose. Common occasions include: a serious relationship that both people are committed to but are not ready to formalise as an engagement, a long-distance relationship where the ring serves as a physical reminder of commitment while apart, an anniversary that feels significant without being a formal proposal milestone, or a personal vow that one person wants to mark for themselves. There is no rule about how long a couple must be together before a promise ring is appropriate. Q5: Does a promise ring need to have a diamond? No. A promise ring can be any ring with any design. Many promise rings are plain metal bands, simple solitaire rings with a small gemstone, or rings with symbolic details like birthstones, engravings, or meaningful motifs. The ring does not need to follow any particular design convention because it has no fixed symbolic form the way an engagement ring does. The most important quality of a promise ring is that it holds meaning for the people involved, not that it meets any external standard of design or gemstone quality. That said, a diamond promise ring — particularly a small solitaire or a simple ring with a modest diamond — is entirely appropriate and gives the ring the visual character of fine jewellery while remaining distinct from an engagement ring in scale and occasion. Q6: How much should a promise ring cost in NZ? Promise rings in New Zealand range from a few hundred dollars for a simple plain band to several thousand dollars for a ring with a significant diamond or gemstone. Because there is no external expectation for what a promise ring should look like or cost, the budget is entirely personal. Most promise rings are less expensive than engagement rings by design — part of what distinguishes a promise ring from an engagement ring is its scale and the occasion it marks. A promise ring that costs $500 to $2,000 NZD covers a wide range of beautiful, well-crafted rings in 18ct gold. A promise ring at $300 to $500 NZD in a fine metal with a small diamond or gemstone is equally meaningful. TJ Diamond handcrafts engagement and fine jewellery rings from $999 NZD, and the same quality of handcrafting applies to any ring commissioned for a personal commitment. Q7: Can a promise ring become an engagement ring? Yes, in some relationships the promise ring is later given additional meaning — or replaced by an engagement ring — when the couple decides to formalise their commitment as an engagement. Some people choose to keep the promise ring and add the engagement ring alongside it. Others replace the promise ring with the engagement ring, retiring the first ring as a meaningful object to keep rather than wear. Some couples design the engagement ring specifically to stack or pair with the existing promise ring. None of these approaches is more correct than the others. What matters is what feels most meaningful to the specific people involved. Q8: What is a good promise ring design for NZ buyers? The most popular promise ring styles at TJ Diamond are simple, elegant designs that read as clearly fine jewellery without being mistaken for an engagement ring at a glance. A slim 18ct gold band with a small single diamond, a plain polished or brushed band with an engraving on the inside, a simple solitaire with a gemstone in the recipient's birthstone colour, or a delicate stackable ring that can later be worn alongside an engagement ring are all well-suited. The design should reflect the recipient's taste rather than following any convention, and the metal should match or complement any other fine jewellery they wear regularly. 18ct gold in yellow, rose, or white is the most appropriate metal for a fine jewellery promise ring, and is the standard TJ Diamond uses for all handcrafted rings.  

Quick answers: Left hand, ring finger, wedding band closest to the hand with the engagement ring above it. They do not need to match. If they do not sit flush, a contoured wedding band solves this. If the combined width feels tight, each ring needs to be sized slightly looser than it would be worn alone. Getting engaged answers the question of what ring you are buying. Getting married raises a new set of questions that almost nobody thinks about until they are already in the jeweller's office. Which hand? Which order? Do they have to match? What if there is a gap between them? What if they feel uncomfortable together? This article answers all of it. Which Hand and Which Finger In New Zealand and most of the English-speaking world, both the engagement ring and wedding band are worn on the ring finger of the left hand. The tradition comes from the Roman concept of the vena amoris  the vein of love, believed to run from the ring finger of the left hand directly to the heart. The anatomy is not accurate, but the tradition it created has persisted across centuries and across cultures that have largely adopted Western wedding customs. Some countries use the right hand instead  Germany, Norway, Russia, Greece, and several South American countries among them. In New Zealand, the left hand is the standard, and the combination of engagement ring and wedding band on the left ring finger is what most people expect and most jewellers design for when creating contoured or fitted wedding bands. The Order  Which Ring Goes on First The traditional order is the wedding band closest to the hand, with the engagement ring sitting above it. This means the wedding band occupies the innermost position on the finger, closest to the heart in the vena amoris tradition, and the engagement ring sits on top. At the wedding ceremony itself, the convention is to temporarily move the engagement ring to the right hand or to a different finger before the ceremony begins, so the wedding band can be placed on the bare ring finger first. After the ceremony, the engagement ring is moved back above the wedding band into its everyday position. This is why the order matters at the ceremony  so the wedding band ends up in the correct position without having to remove it and put it back on. The order is a tradition, not a rule. Many couples simply wear the rings in whatever order feels most comfortable or looks best on their specific hand. If you prefer the engagement ring closer to the hand and the wedding band above it, there is nothing wrong with that. The symbolic tradition of the wedding band closest to the heart is meaningful if it matters to you, and entirely optional if it does not. Do the Two Rings Need to Match? No. Matching is a personal choice. The most practically important question is whether the two rings sit comfortably next to each other without one damaging the other  not whether they match in metal or style. Matching metals: Both rings in the same metal (18ct yellow gold with 18ct yellow gold, platinum with platinum) create a cohesive visual pair that reads as a set. The simplest and most unified look. Contrasting metals: Different metals can look intentional and distinctive when the contrast is clear. Yellow gold engagement ring with a platinum wedding band, or a platinum engagement ring with a rose gold wedding band, are both valid combinations that read as deliberate. Yellow gold with white gold: This combination is the one most likely to read as unintentional mismatch rather than deliberate contrast, because the two metals appear similar but not identical under most lighting. If mixing warm and cool metals, the contrast between yellow gold and platinum is more visually distinct and intentional in appearance. Rose gold with other metals: Rose gold pairs naturally with both yellow gold (both warm metals with subtle tone difference) and platinum (warm against cool, clear and deliberate contrast). Rose gold with white gold carries the same partial-match problem as yellow gold with white gold. The Most Common Problem  When Rings Do Not Sit Flush The most frequently asked practical question about wearing rings together is what to do when there is a visible gap between the engagement ring and the wedding band. This almost always occurs when the engagement ring has a protruding centre stone or a raised setting that prevents a straight wedding band from sitting flush against it. A plain straight wedding band placed next to an engagement ring with a significant diamond solitaire will not sit against the ring  it will float beside it with a gap where the setting prevents contact. This gap is not a problem with either ring individually. It is the result of combining a straight band with a ring design that extends above the plane of the band. Three solutions for the ring gap problem Contoured or shaped wedding band: A contoured wedding band is curved or indented to fit around the specific profile of an engagement ring setting. It sits flush with no gap because it follows the engagement ring's outline. TJ Diamond crafts contoured wedding bands to complement any engagement ring, including rings made elsewhere. Bring your engagement ring to our Auckland studio for a precise fitting. Wear the rings on separate hands: Some people choose to wear the wedding band on the left hand and the engagement ring on the right hand after the ceremony. Both rings are present and worn daily, but on separate hands, which eliminates the gap problem entirely and gives each ring its own presence. Wear the engagement ring less frequently: Some wearers reserve the engagement ring for occasions and wear the wedding band alone for daily activities. This also protects the engagement ring from the wear and tear of everyday tasks. For the full range of TJ Diamond wedding bands including straight and contoured options, see our wedding bands collection. Ring Width and Comfort When Wearing Two Rings Together When two rings are worn on the same finger, each ring needs to fit slightly looser than it would as a standalone piece. Two rings sitting side by side compress against each other and reduce the effective space on the finger. A ring sized correctly for solo wear may feel uncomfortably tight alongside a second ring, particularly in warm weather when fingers naturally expand. Ring width combination Typical feel together Practical note 2mm band plus 2mm band Very comfortable for most fingers Delicate and minimal as a pair 2mm band plus 4mm band Comfortable for most fingers A visible width difference that reads as intentional 3mm band plus 3mm band Comfortable, moderate finger coverage The most balanced combination 4mm band plus 4mm band Comfortable for wider fingers, may feel crowded on narrower fingers Try both on together before committing 5mm band plus 4mm band Covers a significant portion of the finger Ensure each ring is sized slightly loose before ordering TJ Diamond recommends trying on the specific combination of both rings together before finalising sizing for the wedding band. Our Auckland studio holds all widths for comparison, and virtual consultations can show the proportional difference between width options before any order is placed. What to Do at the Wedding Ceremony The convention is to move the engagement ring to the right hand before the ceremony so the wedding band can be placed on the bare left ring finger first. After the ceremony, the engagement ring is moved back to the left hand above the wedding band. Some people ask a trusted friend or family member to hold the engagement ring during the ceremony to avoid the distraction of managing rings at the altar. Others place it on the right hand just before the ceremony begins. Either approach works. The important thing is that the wedding band is placed directly on the left ring finger first, so it ends up in the correct position without requiring rearrangement after the ceremony. For more on the ceremony question specifically, see our article do you wear your engagement ring during the wedding ceremony?. A Note on Protecting Both Rings Two rings worn together on the same finger will contact each other constantly during daily wear. Over time, the metal of each ring will abrade the metal of the other. This is most visible when a plain metal band rubs against a diamond-set engagement ring  the metal of the band can develop wear marks where the prongs or setting of the engagement ring make contact. The best way to minimise this wear is a contoured band that fits flush against the engagement ring setting, reducing the contact points. Platinum, the hardest fine jewellery metal, is the most wear-resistant choice for daily contact between rings. 18ct gold, both yellow and rose, wears slightly faster than platinum but develops a patina that many wearers appreciate over decades. TJ Diamond's lifetime warranty covers professional re-polishing and prong maintenance for both engagement rings and wedding bands for the life of every ring we make  keeping both rings in their best condition regardless of how they are worn together. Ready to choose your wedding band? Browse our wedding bands collection, or  contact our Auckland team to discuss a contoured wedding band fitted precisely to your engagement ring.

A ring that does not fit is one of the most common situations in fine jewellery. A proposal ring sized from a best guess. A wedding band ordered months before the ceremony when weight or temperature had changed. An inherited ring from a family member with different fingers. A ring worn for decades as a finger naturally changes shape. In all these cases, the question is the same: can this ring be resized, and if so, by how much and with what outcome? The answer depends on three things: the design of the ring, the metal it is made from, and how many sizes need to change. This article covers all three, including the specific ring types that cannot be resized at all. How Ring Resizing Works Sizing down — making a ring smaller To make a ring smaller, the jeweller marks the amount to be removed, cuts a small section out of the band at the back of the ring, and re-joins the two cut ends using solder or laser welding. The join is then filed, sanded, and polished until it is invisible in the finished ring. Done correctly by an experienced jeweller, a size reduction is not detectable in the finished ring. Sizing up — making a ring larger To make a ring larger, the jeweller has two options. For very small increases (half a size to one full size in yellow or rose gold), stretching the band over a mandrel is sometimes possible, gradually increasing the diameter while maintaining the band's uniform thickness. For larger increases, or for any platinum ring, the jeweller cuts the band at the back, inserts a small piece of additional metal in the same alloy, and re-joins and polishes the seam to invisibility. Metal insertion produces a more structurally sound and consistent result than stretching, and is the recommended approach for all but the smallest adjustments. How Many Sizes Can a Ring Be Safely Resized? The practical safe range for most ring resizing is one to two sizes in either direction. Within this range, the metal can be adjusted without significantly affecting the band's proportions, prong alignment, or roundness. Beyond two sizes, the structural requirements of the adjustment increase substantially. Size change Typical outcome Notes Half to one size Clean result, seamless join, fully invisible Most common and safest resize range One to two sizes Clean result with skilled jeweller, may require stone checking Recommended range for most rings Two to three sizes Possible for plain bands in good condition, more complex Prong and setting inspection essential after resize More than three sizes New ring often preferable to repeated metal stress Discuss options with jeweller before proceeding Which Rings Can and Cannot Be Resized Plain gold or platinum solitaire: Can be resized. The simplest resize. No stones near the resize area. Most straightforward outcome. Four-prong or six-prong solitaire with plain band: Can be resized. The prong setting is at the front of the ring, away from the resize area at the back. Standard resize process with prong inspection after completion. Pavé band (half pavé): Can usually be resized if the stones are set on the top half of the band only, leaving a plain metal section at the back for the resize. Complex and requires a jeweller experienced with pavé maintenance after adjustment. Half eternity ring: Can usually be resized. Stones are set on approximately half the band circumference, leaving a plain section at the back. The plain section is used for the resize adjustment. Full eternity ring: Cannot be resized. Stones run continuously around the entire band. There is no plain section to cut into for a size reduction or add metal to for a size increase without disrupting the stone setting. Accurate sizing before ordering is essential for full eternity rings. Full pavé band: Cannot be resized. Same principle as full eternity: stones cover the entire band with no plain section available for adjustment without disturbing the setting. Channel-set band (full circumference): Cannot be conventionally resized. Stones are held between two metal channels running the full circumference. Resizing would require removing and resetting all stones. Tension setting: Cannot be resized. The tension setting holds the diamond by compressing the band. Any change in band diameter changes the tension and compromises stone security. The most important ring resizing rule in the NZ market: if you are considering a full eternity ring or a full pavé band, measure your ring size precisely before ordering. These rings cannot be adjusted after the fact. A half eternity ring is always the safer choice if there is any uncertainty about sizing. For more on eternity rings and the specific sizing considerations for full vs half eternity designs, see our article what is an eternity ring? which covers this in detail. Resizing Gold vs Platinum Rings Gold rings Yellow gold and rose gold rings are the most straightforward to resize. The metal is malleable, responds well to both stretching and metal insertion, and solders cleanly. Most NZ jewellers with standard goldsmithing skills can resize a plain yellow or rose gold ring correctly. White gold rings are also gold at their core (alloyed with palladium or nickel) and resize in the same way, but may require rhodium re-plating after the resize to restore a consistent white surface across the band. Platinum rings Platinum resizing requires specialist skills and equipment. Platinum has a significantly higher melting point than gold and behaves differently during the soldering and finishing process. A platinum resize performed by a jeweller unfamiliar with the metal can result in visible porosity at the join, surface discolouration, or a seam that polishes out differently from the surrounding metal. A qualified platinum jeweller achieves a seamless, invisible result. Platinum also work-hardens with each adjustment, meaning it becomes progressively more difficult to work with the more times it is resized. This makes it important to establish the correct size as accurately as possible before the first resize, and to avoid unnecessary adjustments. TJ Diamond's Lifetime Warranty and Resizing Policy TJ Diamond's lifetime warranty covers ring resizing for the life of every ring we make in our Auckland studio. If your ring no longer fits due to natural finger size change over time, pregnancy, or any other reason, we resize it at no charge. The warranty also covers prong inspection and stone checking after any resize, since prong alignment can be affected by the adjustment process. Full details of what TJ Diamond's lifetime warranty covers are documented. If you are purchasing a ring and are unsure of your size, TJ Diamond recommends visiting our Auckland studio for a calibrated metal sizing measurement before ordering. Browse our engagement ring collection or our  wedding bands collection to see the full range of ring styles and their resizability considerations. For any question about resizing a specific TJ Diamond ring, contact our Auckland team and we will advise on the process, timeline, and any specific considerations for your ring design. Frequently Asked Questions Q1: Can an engagement ring be resized? Most engagement rings can be resized, but the ease and outcome depend on the ring's design, the metal, and how many sizes need to be changed. A plain gold or platinum solitaire band can typically be resized up or down by one to three sizes without affecting the ring's integrity or appearance. Rings with diamonds or gemstones set around the band (full eternity, pavé, or channel-set bands) are more complex to resize and may require additional stone work to maintain secure settings after adjustment. Full eternity rings, where diamonds run continuously around the entire band, cannot be conventionally resized at all. TJ Diamond's lifetime warranty covers ring resizing for the life of every ring we make. Q2: How many sizes can a ring be resized? For a plain gold or platinum band, most jewellers can resize up to two to three sizes up or down without significantly affecting the ring's structural integrity. Beyond two to three sizes, the metal must be significantly stretched or compressed, which can affect the band's proportions, the prong alignment, and the overall roundness of the ring. For very large size changes, making a new ring entirely is often a better outcome than repeatedly stretching or compressing an existing one. The practical safe range for most ring resizing is one to two sizes in either direction, with three sizes possible for plain bands in good condition. Q3: What types of rings cannot be resized? Full eternity rings — where diamonds or gemstones are set continuously around the entire circumference of the band — cannot be conventionally resized. There is no plain metal section available to cut into for a size reduction, or to add metal to for a size increase, without disrupting the stone setting. For full eternity rings, accurate sizing before ordering is essential. Half eternity rings, where stones are set on approximately half the band with a plain section on the back, can typically be resized by working with the plain section. Rings with complex structural elements, very thin bands, or settings that run to the extreme edge of the band may also be difficult or impossible to resize without compromise. Q4: Does resizing a ring damage it? A correctly performed ring resize by a skilled jeweller should not visibly damage the ring. For sizing down, the jeweller removes a small section of the band and re-joins the ends. For sizing up, the jeweller stretches the band or inserts a small piece of additional metal and re-joins it seamlessly. The join should be invisible in the finished ring, and the metal surface should be re-polished to match. The most common risk in resizing is in rings with stone settings close to the resize area: if a prong or setting is near the join, it may require re-tightening after the resize. TJ Diamond's lifetime warranty covers all resizing work on rings we have made, including any stone checking and prong maintenance after the resize. Q5: How long does ring resizing take in NZ? Most ring resizes at a professional jewellery studio in NZ take between 3 and 7 working days for a standard plain band resize. More complex resizes, including rings with stone settings that need maintenance after the resize, or rings requiring significant structural adjustment, may take 1 to 2 weeks. Urgent resizes can sometimes be accommodated faster, but rushing a resize increases the risk of visible seam lines or inadequate stone checking after the adjustment. For TJ Diamond rings, resizing is covered under the lifetime warranty and is carried out in our Auckland studio. Contact us to discuss the timeline for your specific ring. Q6: Can a platinum ring be resized? Yes, but platinum resizing requires specialist skills because platinum behaves differently from gold during the resize process. Platinum is denser and has a higher melting point than gold, which means it requires more force to work and more precise temperature control when re-joining the band. A platinum resize performed by a jeweller inexperienced with platinum can result in porosity in the join, visible seam lines, or surface discolouration. An experienced platinum jeweller achieves a seamless result. TJ Diamond's Auckland studio works with platinum regularly and all platinum ring resizing is carried out by our experienced team. Platinum's work-hardening property means resizing becomes harder the more times a platinum ring is adjusted, so it is important to establish the correct size as accurately as possible before the first resize. Q7: How do I know what ring size to order when buying a new ring? The most accurate method is to be measured in person at a jewellery studio using calibrated metal sizing rings, which account for band width (wider bands require a slightly larger size than narrower bands at the same finger). Online plastic sizer kits are a reasonable approximation for narrower bands but are less accurate for wider bands. If ordering as a surprise gift, common approaches include: borrowing a ring the recipient already wears on the correct finger and tracing the inner circle, asking a trusted family member who may know, or using the average NZ women's ring size (N, approximately US 6.75) as a starting point. TJ Diamond includes a complimentary resize within the first 12 months for any ring we make, so a slightly incorrect size on delivery is not a significant problem for most ring styles. Q8: Does TJ Diamond resize rings made by other jewellers? TJ Diamond's resizing service is primarily for rings handcrafted in our Auckland studio and covered under our lifetime warranty. For rings made elsewhere, we recommend consulting the original jeweller first, as they will have the most knowledge of the specific ring's construction, metal composition, and setting details. If the original jeweller is unavailable, a qualified Auckland jeweller can assess whether resizing is appropriate for your specific ring. Contact TJ Diamond to discuss whether we can assist with your specific ring. Q9: What is the difference between resizing up and resizing down? Resizing down (making a ring smaller) involves removing a small section of the band and re-joining the ends. This is generally the more straightforward of the two adjustments, as it reduces the band without adding new material. Resizing up (making a ring larger) involves either stretching the band uniformly around a mandrel, or cutting the band and inserting a small piece of additional metal. For small increases (half a size to one full size), stretching is sometimes possible for gold rings. For larger increases, metal insertion provides a more structurally sound and consistent result. Platinum rings are almost always resized by metal insertion rather than stretching, due to platinum's resistance to stretching. Both methods, done correctly, should be invisible in the finished ring.