Diamond Rings NZ — Handcrafted in Auckland

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Front view of a round cut split shank lab-grown diamond engagement ring in 18kt white gold. Round cut split shank lab-grown diamond engagement ring worn on hand in 18kt white gold.
Round Cut Split Shank Diamond Engagement Ring - 18kt White Gold
From $1,809.00
From $1,809.00
Front view of a round cut split shank lab-grown diamond engagement ring in 18kt yellow gold. Round cut split shank lab-grown diamond engagement ring worn on hand in 18kt yellow gold.
Round Cut Split Shank Diamond Engagement Ring - 18kt Yellow Gold
From $1,809.00
From $1,809.00

A diamond ring is one of the most significant purchases a person makes. It might mark an engagement, a milestone anniversary, a personal achievement, or simply a decision to own something genuinely beautiful. Whatever the occasion, the quality of the stone and the craftsmanship of the setting determine whether a ring becomes a treasured possession for life or a compromise you regret. At TJ Gold & Diamond, we build rings that hold up to the scrutiny of both.

Every diamond ring in our collection is handcrafted in our Auckland studio by master jewellers. We are New Zealand's only direct-to-consumer fine jewellery manufacturer — meaning your ring passes through no middlemen, no importers, and no retail chains. The jeweller who sets your diamond is the same person you can speak to before, during, and after purchase. The result is fine jewellery at honest prices, with craftsmanship you can actually trace.

Natural and Lab-Grown Diamond Rings

We offer both natural and lab-grown diamonds across our entire ring collection, and we are genuinely transparent about the differences.

Natural diamonds are mined from the earth, formed over billions of years under immense geological pressure. Their rarity is part of their appeal, and for many buyers, provenance matters. Our natural diamonds are independently certified by IGI or GIA, with every stone graded for cut, colour, clarity, and carat weight before it reaches our studio.

Lab-grown diamonds are chemically and physically identical to mined diamonds — the same hardness (10 on the Mohs scale), the same optical brilliance, the same certification criteria. Created in a controlled environment using advanced technology, lab-grown diamonds are typically 30–50% more affordable than equivalent natural stones. This means a larger, higher-grade diamond for the same budget — without any compromise in quality. Both options are available across every style, shape, and metal in our collection.

Our Diamond Ring Collection

Diamond rings serve different occasions and carry different meanings. Our collection reflects that breadth:

  • Engagement rings — our largest category. Solitaire, halo, three-stone, bezel, split-shank, and east-west designs across 10 diamond shapes

  • Wedding and eternity bands — plain and diamond-set bands designed to complement or stand alone, in all four metals

  • Anniversary and dress rings — statement pieces and stackable designs for milestones, gifts, and everyday luxury

  • Men's diamond rings — understated bands and contemporary designs with diamond accents, built for everyday wear

All rings are available in platinum, 18ct yellow gold, 18ct white gold, and 18ct rose gold. Use the filters above to search by diamond shape, metal, setting style, and price. Every ring starts from $999 USD.

Diamond Shapes — Choosing the Right One

The shape of a diamond changes everything — how it sits on the hand, how much light it returns, and how it reads in a setting. Our collection covers all major cuts:

  • Round brilliant — the most popular cut. Maximum fire and brilliance. Timeless in any setting

  • Oval — currently the fastest-growing choice. Appears larger per carat and elongates the finger

  • Pear and marquise — bold, elongated shapes that make a confident statement

  • Emerald cut — architectural and refined. Prioritises clarity and clean lines over sparkle

  • Cushion — soft corners, vintage warmth, exceptional brilliance

  • Princess, radiant, asscher, heart — each with its own character and best-suited setting

Not sure which shape is right? Book a consultation at our Auckland studio and compare stones side by side on the hand. The difference is immediately obvious in person.

Gold Diamond Rings NZ

Gold remains the most popular metal choice for diamond rings in New Zealand. Yellow gold gives diamonds a warm, classic framing and complements lower colour grades beautifully. White gold offers a cleaner, cooler backdrop that maximises the appearance of colourless stones. Rose gold has become increasingly popular for its romantic warmth and distinctive look, particularly with oval diamond ring and pear-cut diamonds. All our gold rings are crafted in 18ct gold — 75% pure gold alloyed for durability — and are available across our full diamond ring range.

The TJ Gold & Diamond Commitment

Every ring includes a lifetime manufacturing warranty, one complimentary resize within 60 days, and a diamond certificate from IGI or GIA. We ship securely throughout New Zealand with full insurance, and offer collection from our Auckland studio for buyers who want to inspect their ring in person before it leaves. There are no retail markups, no pressure, and no surprises.

Browse the collection above. Filter by shape, metal, price, and setting. If you cannot find exactly what you are looking for, our bespoke service will build it from scratch.

Diamond rings NZ — made the honest way, in Auckland.

TJ GOLD & DIAMOND · AUCKLAND

Buying an engagement ring?
Start here.

You don’t need to know anything about diamonds to choose the right ring. Tell us what you know—even if that’s very little—and we’ll make the next step simple.

Or browse all engagement rings
Made in AucklandFrom $999 NZDLifetime care
A clearer way to choose

The hardest part isn’t buying a ring. It’s knowing you’re making the right choice.

Most people begin unsure about budget, diamond quality, style or ring size. That’s completely normal. Our short finder turns what you know into a useful starting point—without pressure, jargon or dozens of confusing decisions.

There are no wrong answers. Choose “I’m not sure” whenever you need to.

The TJ Ring Finder

Let’s make this easy.

Question 1 of 6
What is your approximate budget?

A guide is enough. We’ll help you get the best balance of diamond and setting.

Do you know which diamond shape they like?

Shape is the outline of the diamond when viewed from above.

Which ring style feels closest?

If you’re unsure, think about whether their taste is simple, sparkling or distinctive.

Which metal would they prefer?

A useful clue is the colour of jewellery they already wear most often.

Lab-grown or natural diamond?

Both are real diamonds. The difference is their origin, rarity and price.

Do you know their ring size?

Don’t worry if you don’t—we can help you estimate discreetly and resize when required.

Why choose TJ

Less uncertainty.
More confidence.

01

Manufacturer-direct value

We design, cast, set, polish and quality-check our jewellery in-house, without traditional retail middlemen.

02

Certified diamonds

Choose independently certified lab-grown or natural diamonds, with clear guidance on what genuinely affects beauty and value.

03

Made in Auckland

Your ring is handcrafted by our own team, giving you a direct relationship with the people who make it.

04

Support beyond the proposal

Every ring is backed by our lifetime manufacturing guarantee and complimentary lifetime care.

Still unsure?

That’s exactly what we’re here for.

You can visit us with a clear idea, a saved photo, or no idea at all. We’ll explain your options plainly, work within your budget and help you choose without pressure.

Talk to a jeweller Explore our diamond price calculator

Frequently Asked Questions

What kinds of diamond rings does TJ Gold & Diamond make?

TJ Gold & Diamond handcrafts the full spectrum of diamond rings in Auckland — from engagement rings and wedding bands to anniversary rings, dress rings, and everyday fine jewellery. All styles are available with either natural or lab-grown diamonds in platinum, 18ct yellow gold, 18ct white gold, and 18ct rose gold. Diamond shapes include round brilliant, oval, pear, emerald cut, cushion, marquise, radiant, princess, asscher, and heart. Whether you need a single statement ring or a complete set, every piece is made to order in our Auckland studio.

How much do diamond rings cost at TJ Gold & Diamond NZ?

Our diamond rings start from $999 NZD. The final price depends on the diamond type (natural or lab-grown), carat weight, colour and clarity grade, the metal chosen, and the setting complexity. Because we manufacture directly in Auckland with no retail chain or intermediaries, TJ Gold & Diamond prices reflect actual craftsmanship costs rather than showroom markups. A 1-carat lab-grown diamond ring that might retail for $8,000–$15,000 at a traditional jeweller is substantially more accessible through us. We are always transparent about pricing — contact us for a no-obligation quote on any design.

What is the difference between natural and lab-grown diamond rings?

Both are real diamonds. Natural diamonds form beneath the earth over billions of years and are mined. Lab-grown diamonds are created in a controlled environment using the same carbon chemistry and crystal structure — they are chemically, physically, and visually identical to mined diamonds. The practical differences: lab-grown diamonds are typically 30–50% more affordable, making a larger or higher-grade stone achievable for the same budget. Natural diamonds carry the provenance of geological rarity. At TJ Gold & Diamond, we offer both — and our jewellers will help you understand the trade-offs for your specific priorities.

Can I try a diamond ring in person before buying?

Yes — this is one of TJ Gold & Diamond's key advantages. We invite you to visit our Auckland studio by appointment to view finished ring designs, try on different styles, compare diamond shapes and sizes, and speak directly with the jeweller who will make your ring. For couples outside Auckland, we offer virtual consultations where we can walk you through our collection in detail. For bespoke orders, we produce your ring and arrange a viewing before you pay the final balance — so there is never any risk of buying something you haven't seen and approved.

Are TJ Gold & Diamond rings certified and warranted?

Yes on both counts. Every diamond sold by TJ Gold & Diamond is certified by either IGI (International Gemological Institute) or GIA (Gemological Institute of America) — the two most trusted grading laboratories in the world. Your certificate confirms the exact cut, colour, clarity, and carat weight of your stone. Every ring also comes with TJ Gold & Diamond's lifetime manufacturing warranty, which covers structural defects, prong tightening, and stone resetting at no charge. One complimentary resize is included within 60 days of purchase.

How are TJ Gold & Diamond rings made?

Every ring is handcrafted in our Auckland, New Zealand studio — from raw metal to the finished, polished piece. We cast in platinum, yellow gold, white gold, and rose gold in-house. Diamonds are set by hand by our master jewellers, and every finished ring is inspected under magnification before delivery. Because we manufacture under one roof with no outsourcing, you can trace the craftsmanship from the design brief to the box your ring arrives in. This direct model also means we carry no retail markup — the price you pay reflects the actual work, not the cost of a high-street shop.

How long does it take to make a diamond ring?

Ready-to-order ring designs from our collection are typically completed within 3–5 weeks. Fully bespoke rings — designed from scratch with your chosen diamond, setting, and metal — generally take 4–6 weeks from confirmed design brief to completion. We send progress updates throughout. If you need a ring by a specific date (a proposal date, anniversary, or holiday gift), we recommend booking a consultation at least 6–8 weeks in advance. Expedited timelines may be available for simpler designs — ask us during your consultation.

What diamond shapes are most popular for diamond rings?

Round brilliant is consistently the most popular diamond shape — its 58 facets maximise light return and deliver the most sparkle per carat. Oval cuts are currently one of the fastest-growing choices because they appear larger on the finger for their carat weight and offer a flattering elongating effect. Emerald cuts suit those who prefer architectural lines and exceptional clarity over maximum sparkle. Cushion cuts blend vintage appeal with modern brilliance, while pear and marquise cuts suit bolder, more distinctive styles. Our jewellers can show you any shape in person — the same carat weight can look dramatically different depending on the cut.

Can I design a completely custom diamond ring?

Yes — our bespoke design service covers everything from minor modifications to existing designs through to completely original creations built from your brief or a photo of a ring you love. You select the diamond (shape, carat, colour, clarity), the metal, the setting style, any side stones, and all finishing details. We provide a full design consultation, CAD rendering if requested, and progress updates throughout production. Bespoke rings start from $999 NZD — because lab-grown diamonds are more affordable, your budget typically goes much further with us than at a traditional jeweller.

Do you ship diamond rings across New Zealand?

Yes. We ship all completed rings throughout New Zealand via secure, fully insured courier delivery. Rings are carefully packaged in our presentation box with all documentation, certification, and warranty information included. For Auckland customers, we prefer in-person collection at our studio so we can walk you through the ring and confirm everything is perfect before you leave. Delivery timelines for shipped orders depend on courier service and are confirmed at the time of your order. We do not charge for standard shipping within New Zealand.