58.900 krincluding tax & shipping

Spiral No.1 – an unconventional diamond ring.

220 of the world’s finest diamonds wind their way around your finger in a beautifully sculpted, playfully elegant diamond ring with a difference.

Made to order. Please allow two weeks for delivery.


Choose gold colour

Size Guide


58.900 krincluding tax & shipping

Montluc » SPIRAL No.1

Three ways to find your size

Montluc » SPIRAL No.1

1. Try-out*

We strongly recommend that you visit a jeweller and measure your ring size. It’s the safest way and at the same time you can compare our specs for benchmark.

Montluc » SPIRAL No.1

2. Size-up

If you currently owns a ring that fits just perfect, great! Download and print our size-guide. Then follow a few easy steps to determine your ring size before you place your order.
Note: Download the PDF to desktop before printing.

Download Montluc size-guide

Montluc » SPIRAL No.1

3. Convert your size

If you know your size (non-EU) you can easily use our conversion chart to find out which size is your perfect fit. Download it and get going.

Download Montluc size-chart

* We strongly suggest a real try-out at your local jeweller to accurately size up your finger. Then place your order here and be amazed of how much our products spark.

We don’t compare to the very best. We are the benchmark for it.

CutTriple Excellent
ColourD to F (colourless)
ClarityFlawless to VVS2
CaratTotal diamond carat weight: 1.05ct
Gold6.0 gram, 18k gold (pd135)
Width9.0 mm
CertificateMontluc Certificate of Authenticity

No ordinary ring. But then again, are you an ordinary kind of woman?

Montluc - Spiral No.1 diamond ring showcase
  • 100% Belgium-sourced and made
  • 100% Exploitation free
  • 100% Compliant with the highest internationally-recognised standards
  • 100% Spellbinding

The same slim and sparkling elegance of a classic eternity ring. A few twists and turns from tradition. If the highly exceptional sparkle of Spiral No.1 didn’t attract attention, the highly unusual form certainly would.

Spiral No.1 takes four eternity rings, bends them in a randomly beautiful way, then joins them together to create something completely new and spellbindingly different. Over one carat’s worth of 220 diamonds playfully wrap themselves around your finger.

Creating the Montluc sparkle.

At the same time, this is a serious piece of jewellery: each radiates light as only a perfectly clear, colourless and triple excellent cut diamond can. And with every facet painstakingly and perfectly aligned to reflect the same light at the same time in the same way, the effect is even more pronounced.

Who aims for average?

A confident departure from convention, Spiral No.1 is a flawlessly flawed ring guaranteed to stand out in any setting. Real presence at a party. A bold statement of confidence at a meeting. Spiral No. 1 is far from your average diamond ring. Which probably says a lot about the brilliant woman who chooses to wear it.

Montluc diamonds are a cut above.

If you want that ‘Oh wow, I can’t believe how much it sparkles’ factor, it’s the cut you need to look at.

Most diamonds are graded from Poor to Excellent on official GIA (Gemological Institute of America) cut grades. Montluc, by contrast, only ever uses the very finest standard of quality that goes one step further. Two, actually.

The Triple Excellent cut ensures that our diamonds are all impeccably polished, perfectly cut and precisely aligned, balancing the reflection of light and amplifying its radiance.

No exceptions.

Montluc uses only the world’s finest diamonds – in fact, we select only the top 3%. Needless to say, the quality of our gold is equally uncompromising. While most gold rings are cast, Spiral No.1 is sculpted from a solid 18k pd135 gold bar, which is up to three times harder. So it lasts longer, wears better and looks perfect even under the closest inspection.

We don’t compare to the very best. We are the benchmark for it.

CutTriple Excellent
ColourD to F (colourless)
ClarityFlawless to VVS2
CaratTotal diamond carat weight: 1.05ct
Gold6.0 gram, 18k gold (pd135)
Width9.0 mm
CertificateMontluc Certificate of Authenticity
Montluc » SPIRAL No.1

Diamond grading

To discover more about diamond grading and quality, have a look here.

Spiral No.1 is a work of art, a sparkling sculpture of gold and diamonds as much as a ring. It’s elegant, it’s different and it will take tour breath away."

— Sahra Talén, Team Montluc

If you're not happy, then neither are we.

Satisfaction Guarantee. 100% satisfaction. Or 100% money back.

In the highly unlikely event that your diamond jewellery fails to live up to your expectations, simply return the item to us within 30 days. We will fully reimburse you with the minimum of delay and with no questions asked.


Fitting Guarantee. Try this one for size.

Maybe the ring wasn’t for you or you weren’t totally sure which size to go for. Whatever happened, it isn’t an issue. Send the original ring back and we’ll redeliver your perfect fit, super fast.


The unique Montluc ‘Oh no!’ Guarantee. Because sometimes it just isn’t your day.

Even our exceptional diamond jewellery is no exception to the fact that accidents happen. So if you’re having one of those days that inevitably means you’re going to drop it, crack it, scrape it…you name it…just relax. Return your item along with all detached bits and pieces and we’ll send a brand new replacement.

If you ever need to activate your Montluc guarantee, please email us at customerservice@montluc.com

Shipping. The journey begins.

A close-up of Montluc packaging with lid closed


Every piece of Montluc diamond jewellery is crafted with artistry, precision and the very highest quality gold and diamonds. Each is made to order, normally it takes two weeks to receive the latest sparkle in your life.

Our prices include global express shipping and full insurance. In the unlikely event your package is lost in transit, we will send out a replacement at no additional cost.


Arriving in style.

Montluc diamond jewellery ships first class and arrives in the style you’re about to become accustomed to.

We have put a lot of thought and effort in making sure that our packaging looks as impressive as the sparkling piece that awaits on the inside. Handmade in Sweden by traditional skilled craftsmen, it is FSC-approved in line with our sustainable, exploitation-free ethos. The enclosed gift card, the golden lettering, the texture, the fabric…each individual element reflects the highest possible quality.

After all, diamond jewellery is always a uniquely special gift. Especially when it’s for you.

Our prices include global express shipping and full insurance. In the unlikely event your package is lost in transit, we will send out a replacement at no additional cost.

— Fredrik Stark, Team Montluc


Free shipping & returns

All prices include fully insured shipping. On the off-chance you need it, returns are also free of charge.

Easy payment

100% satisfaction or 100% money back. If a ring doesn’t fit, we’ll replace it with the right size. And our unique ‘Oh no!’ guarantee offers a free one-time fix for accidental damage.

Gift wrap

All jewellery arrives in high quality, hand-made presentation boxes and comes beautifully gift wrapped to complete the perfect surprise.

A few words from our ambassadors
Just a quick word to say wow! FedEx have just delivered my order and it was so beautifully boxed and wrapped. It got even better when I opened it and saw my Orbits in real life. I can’t help sneaking a quick glance in every mirror I pass!
— Astrid Blute
Montluc claim to offer the finest diamond jewellery you can buy direct from the maker. I did my research, compared specifications with some of the big brands and now I will never walk into a store again. My Halo arrived in May and both the quality and the value are fantastic. More for less – it’s a no brainer!
— Alexandra Jerselius
I wanted to invest in ME. In something that would hold its value even if I enjoy it day after day. So I decided to bring my dream diamond ring to life. Montluc made it an amazing reality with 15 diamonds of the highest gradings possible. It’s a work of art that simply outsparkles everything. Thank you.
— Eva Engelbert
I purchased two Halo No.1 to complement my existing wedding band. The diamonds sparkle like you wouldn’t believe, which has caused a bit of an issue because next to them my original ring looks sooo dull. I’ll soon be back for an upgrade!
— Filippa Helmersson


Our first collection is on
the way, launching piece by
beautifully crafted piece.

Made with the world’s finest diamonds, each and every item is not just a thing of beauty but an electrifying statement of intent. Don’t worry. You’ll soon get used to all those heads turning, eyes widening, and looks of pure envy.

View the collection