Custom Engagement Rings Auckland

TJ Gold & Diamond designs and manufactures custom engagement rings in our own Auckland factory. We are not a retailer who sends your design to a third party — we complete the alloying, CAD design, casting, stone setting, laser welding and hand finishing ourselves, in one facility. That means you deal directly with the people making your ring, you see it in 3D before any metal is cut, and there is no retail markup between the workshop and you. Most custom pieces are completed in one to four weeks, and every one carries our lifetime guarantee and buyback guarantee.

What "bespoke" actually means here

The word gets used loosely. In New Zealand, most jewellers advertising bespoke rings are designing the piece and then sending it to a manufacturer — often offshore — to be made. That is a legitimate way to work, but it means the person you spoke to has limited control once the file leaves their desk, and every change costs time.

At TJ Gold & Diamond, bespoke means built in the building. Our facility handles:

• Precious metal alloying — we mix our own gold, so we control the colour and the karat
• CAD design and engineering — your ring is modelled in 3D and you approve it before production
• Precision casting, including platinum — platinum casting is technically demanding and most NZ workshops outsource it
• Stone setting — natural and lab-grown diamonds, and coloured gemstones
• Laser welding and hand finishing
• Final quality control

If you want a change at any stage, we walk down the corridor. That is the practical difference.

How the process works

1. Consultation. In person at our Auckland studio, or by video call if you are outside Auckland. Bring images, a Pinterest board, a sketch on the back of a receipt — anything. We talk through style, stone, metal, budget and timeframe. Free, and with no obligation to proceed.
2. Stone selection. You choose between certified lab-grown and natural diamonds, or a coloured gemstone. We show you real options in your budget and explain the trade-offs honestly — including where spending more genuinely shows and where it does not.
3. CAD design. We model your ring in 3D so you can see it from every angle before it exists. Revisions happen at this stage, on screen, at no cost. Nothing goes into production until you say yes.
4. Manufacturing. Casting, setting, welding and finishing, all in our Auckland facility.
5. Fitting and collection. We size the ring precisely and check the fit with you. Adjustments are part of the service, not an extra.

What a custom engagement ring costs in New Zealand

Custom engagement rings at TJ Gold & Diamond start from $999 NZD. Because every custom ring is different, here are two real reference points rather than a single vague figure:

Specification	Guide price (NZD)
0.5ct certified lab-grown diamond, plain solitaire, simple setting	From $999
1ct certified lab-grown diamond, 18kt gold, solitaire	Around $2,300

Guide prices only, current as at August 2026. Diamond and gold prices move, and your final figure is confirmed in writing before anything is made.

Between and beyond those two points, the figure depends on four things:

 

• The stone. Usually the largest part of the cost. Lab-grown diamonds are typically 30–50% less than an equivalent natural diamond, which is the single biggest lever you have on budget.
• The metal. Platinum costs more than 18k gold, which costs more than 14k or 9k. Weight matters too — a wide band uses more metal than a fine one.
• Design complexity. A solitaire takes less labour than a halo with pavé shoulders and hidden detailing.
• Setting work. Every small stone is set by hand. Sixty of them takes sixty times the work of one.

Why we don't publish a full price list

A custom ring has too many variables to reduce to a table. Carat weight, colour and clarity grade, metal and karat, setting style, band width and the number of stones set by hand all move the price, and they interact — a 1ct stone in a plain 18kt solitaire and the same stone in a pavé halo are very different pieces of work.

Our online calculator gives you a starting estimate, but it cannot model every combination, and we would rather tell you that than give you a number we then have to revise. That is what the consultation is for: we price your actual design, itemised, in front of you, and you approve it in writing before we cut any metal. It is free, and you are not committed to anything by having it.

Is custom more expensive than buying a ready-made ring?

Usually not, and often less. This surprises people. A ring in a retail display case carries the cost of the store, the sales floor, the stock sitting unsold, and the manufacturer's margin before the retailer's own. Because we manufacture what we sell, a custom ring skips most of that. You are paying for materials and skilled labour rather than for overhead.

What custom does cost you is time — one to four weeks rather than walking out with it today. If you need a ring this afternoon, buy from a case. If you have a few weeks, custom will usually get you more ring for the same money.

Using your own diamond, or an heirloom

Yes, we do this, and it is some of the most satisfying work we take on. If you have an inherited ring that is not being worn, a diamond from a previous engagement, or a piece that is damaged beyond repair, we can rebuild it into something you will actually wear.

We can reset your existing stones into a new design, melt down and re-use your own gold, or reshape a piece while keeping the elements that carry the meaning. We assess the stones and metal in front of you first and tell you honestly what is worth keeping and what is not.

Lab-grown or natural diamonds — your choice

We work with both, and we do not push either. Both come with independent certification from IGI or GIA.

Lab-grown diamonds are chemically and optically identical to mined diamonds, graded on the same 4Cs, and indistinguishable without specialist equipment. They cost 30–50% less, which usually means a larger or better stone for the same budget. Natural diamonds carry the geological history and the traditional resale expectations that matter to some couples. Neither answer is wrong — it depends on what you value, and we will talk it through rather than steer you.

You can read more on our lab-grown diamond pricing guide.

If you are not in Auckland

Plenty of our custom work is for couples outside Auckland and overseas. The process runs by video consultation, with CAD renders sent for approval by email and the finished ring shipped insured. Ring sizing can be handled remotely — we will talk you through how to measure accurately, and resizing is covered.

Guarantees

Every custom piece comes with our lifetime guarantee and our buyback guarantee. Because we made the ring, we can service it — resizing, re-tipping worn claws, re-polishing, re-setting a stone. A retailer who bought your ring from a supplier usually has to send it away.

You can see how we work on our manufacturing process page, or browse finished pieces in our gallery.

Start your design

Book a free, no-obligation consultation at our Auckland studio, or by video call if you are elsewhere. Open 7 days, 10am – 5pm, with free parking.

Book a Free Design Consultation

Custom Engagement Ring Questions, Answered

How much do custom made engagement rings cost in New Zealand?

Custom engagement rings at TJ Gold & Diamond start from $999 NZD for a 0.5ct certified lab-grown diamond in a plain solitaire setting. As a second reference point, a 1ct certified lab-grown diamond in an 18kt gold solitaire is around $2,300 NZD. Above that, the price depends on carat weight, colour and clarity, the metal and karat, the setting style, and how many stones are set by hand. Choosing a lab-grown diamond rather than a natural one typically reduces the stone cost by 30–50%, which is the largest single saving available. Because the variables interact, we price your actual design at a free consultation and give you a firm, itemized figure in writing before anything is made.

Are custom engagement rings more expensive than ready-made ones?

Usually not, and often less. A ring in a retail case includes showroom overhead, unsold stock, and both a manufacturer's and a retailer's margin. We manufacture in our own Auckland facility, so a custom ring skips most of that. What custom costs is time — one to four weeks instead of same-day.

How long does a custom engagement ring take?

One to four weeks for most pieces, from the moment you approve the CAD design. Highly complex designs or unusual stone sourcing can take longer. If you have a proposal date, tell us at the consultation and we will confirm whether it is achievable before you commit.

Can I see the ring before it is made?

Yes. Every custom ring is modelled in 3D CAD and you approve the render before production begins. Revisions at that stage are free and unlimited within reason. Nothing is cast until you are happy.

Can you use my own diamond or redesign an heirloom ring?

Yes. We reset existing stones, re-use your own gold, and rebuild inherited or damaged pieces into new designs. We assess your stones and metal in front of you and tell you honestly what is worth re-using. This is one of the most common reasons people come to us.

Do you use lab-grown or natural diamonds?

Both, and we have no preference between them. All stones are independently certified by IGI or GIA. Lab-grown diamonds are physically and chemically identical to mined diamonds and cost 30–50% less; natural diamonds carry geological rarity and traditional resale expectations. We will explain the trade-offs rather than steer you.

What is the difference between custom and bespoke?

In practice the words are used interchangeably in New Zealand. Both mean a ring designed for you rather than bought from existing stock. The more useful question is whether the jeweller actually manufactures it. Many businesses advertising bespoke rings design them in-house and send them elsewhere to be made. We design and manufacture in the same Auckland facility.

Can I have a custom ring made if I do not live in Auckland?

Yes. We work with couples throughout New Zealand and overseas by video consultation, with CAD renders approved by email and the finished ring shipped insured. We will guide you through measuring ring size accurately, and resizing is covered.

Do I need to know what I want before the consultation?

No. Most people arrive with a rough idea or a few saved images and no technical vocabulary at all, which is completely normal. Our job is to translate what you like into something that can be made and worn daily. The consultation is free and there is no obligation to proceed.

What if I do not like the finished ring?

Then we make her a new one, free. Within 30 days of collection, if she isn't happy with the ring, we don't adjust it — we remake it. She can change the design completely: a different setting, a different stone shape, a different metal. If the new design costs more you pay only the difference; if it costs the same or less there's nothing to pay. And we keep going until she's happy, with no limit on how many remakes within those 30 days. The CAD approval stage means surprises are rare, but this is what happens if there is one.

Do you make custom wedding bands to match?

Yes. Matching or contoured wedding bands are straightforward for us because we still have the CAD file and the exact profile of your engagement ring. A band designed alongside the original sits flush in a way an off-the-shelf band rarely does.

Where are you located?

Our Auckland studio is at 588 Chapel Road, Botany Town Centre, open 7 days from 10am to 5pm with free parking. From September 2026 we relocate to 169 Harris Road, Auckland. We also have a facility in Houston, Texas.