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Your ring, in three steps

Engagement Ring·Made in Australia

Promise - Classic Solitaire Engagement Ring

★★★★★ ·Hand-finished ·Lifetime warranty
From $2,349 AUD

Currently configured: 18ct Yellow Gold

Hand-finished in our Australian workshop. Choose your metal, your centre stone shape and your ring size below. Your centre diamond is chosen at Step 2. Read the full story ↓

1
Choose your metal
18ct Yellow Gold
How to choose your metal

Every option is hand-finished in our Australian workshop. The difference comes down to purity, weight and longevity.

  • 950 platinum · 95% pure · Naturally white and hypoallergenic. Never needs plating. The densest metal we work with, so it feels heaviest on the hand. Most enduring choice for daily wear.
  • 18ct gold · 75% pure gold · The traditional standard for fine Australian jewellery. Richer colour, heftier feel. Our recommendation for engagement rings and heirloom pieces.
  • 14ct gold · 58% pure gold · Slightly harder alloy than 18ct, priced a step below. A practical middle ground when durability matters as much as purity.
  • 9ct gold · 37.5% pure gold · The hardest gold in the range and the most affordable. Ideal for everyday chains, pendants and pieces that take heavier knocks.

On colour

  • Yellow gold deepens naturally with age and needs no plating.
  • White gold is rhodium-plated for its bright finish. Re-plate every 2 to 3 years at our workshop.
  • Rose gold deepens slightly with wear. No plating needed.

Which to pick if...

  • Wedding ring worn daily: 950 platinum
  • Engagement ring: 18ct gold, or platinum if you want maximum enduring wear
  • Everyday chain or pendant: 9ct for durability, 18ct for finer finish
  • Sensitive skin: platinum or high-karat yellow gold (avoid rhodium-plated white gold if you react to nickel; some rose gold alloys can react to copper sensitivity)
14ct
18ct
2
Choose centre diamond shape
Round
Recommended centre carat for Round: 0.252.1ct
3
Choose your ring size
Not selected yet

Standard pricing for sizes F – O. Larger sizes available with a sizing fee.

Setting 18ct Yellow Gold $2,349
Your centre diamond Chosen in Step 2
Ring so far $2,349 + centre
Choose your centre diamond
Want to customise this design?

Our master jeweller creates custom designs, from subtle modifications to fully bespoke pieces.

Get in touch
Ships by
Sunday 20 September 2026
Every ring is hand-finished to order. Allow six weeks from order confirmation. Need it sooner? Talk to us about priority craft.
GIA & IGI Certified
Lifetime Warranty
Free Insured Shipping
14-Day Returns
Made in Australia

The Promise is about as pared back as an engagement ring gets. A plain polished band, four fine claws, and the diamond sitting clear above them. There is nothing else on it, which is the point.

That restraint puts all the pressure on proportion. The band tapers slightly as it rises to the head, so it reads as slim from the front without losing the strength it needs at the shoulders. The claws are set just wide enough to grip the girdle and no wider, which keeps the outline of the stone unbroken when you look straight down at it.

Because nothing distracts, the finish has to be right. Every surface is polished by hand to a mirror, and any flat spot on a band this simple would show immediately.

Available in 14ct or 18ct white, yellow or rose gold, or 950 platinum. The claws are always white gold or platinum, whatever the band, because a white claw disappears against the diamond while a warm one frames it.

Round is the shape this was drawn for and it's what we'd recommend. Oval and cushion also sit correctly in the mount. Choose your centre diamond at Step 2, then we hand-finish the ring in our Australian workshop.

Our Diamond Standard

Cut for perfect light return.

The single standard every diamond we set has to meet, whether it's your centre stone or an accent.

Excellent cut

Excellent cut natural or Ideal cut lab. The single most important factor in how a diamond returns light. A great cut in a modest colour outperforms a poor cut in a top colour every time.

Symmetry & polish

Excellent symmetry, excellent polish. The finishing decisions the cutter makes after the cut is done. Determines whether the light comes out clean or scattered.

No fluorescence

None or Faint only. Strong fluorescence can make a diamond look milky or hazy in daylight. We hand-select stones with clean fluor grading.

Colour, honest

D to G natural. D to E lab-grown. The colour range where a diamond reads white to the naked eye without paying for grades you cannot see.

Hand-finished · Australia

Six stages, six weeks.

The process every ring goes through, in our Australian workshop.

01

Design lock

CAD file locked, dimensions verified against your ring size and centre stone spec.
02

Cast

The setting is cast from your chosen 14ct, 18ct or platinum alloy. One casting per ring.
03

Set the stones

Any accent diamonds are set individually, checked under 10x loupe between each.
04

Set the centre

Your GIA or IGI diamond seated into the mount. Prongs tightened, gaps checked.
05

Polish & finish

Every surface polished to mirror, every edge softened by hand.
06

QC & ship

Full quality check against the design brief, then insured overnight courier to your door.
Reviews

What people say about us.

★★★★★

"Sean was great to deal with. Professional, knowledgeable, and followed through with exactly what he promised. The quality of the ring is excellent and my fiancé and I are thrilled. I would highly recommend Monroe Yorke."

Steve Gilbey · Verified purchase
Common Questions

Your questions, answered.

Ring information reviewed August 2026

Why is the centre diamond bought separately?

Two reasons. Choice, the centre diamond is the single biggest variable in the ring's final look and price. Buying setting and diamond as one bundle means compromising on one to save on the other. This way you match the diamond exactly to your budget, taste, and the recipient's preference.

And speed, the setting can start being made the moment you order Step 1, while you take your time choosing the diamond.

Why do larger ring sizes cost extra?

More precious metal, more setting time. Sizes above the standard range use noticeably more gold or platinum and need extra finishing hours to keep proportions right. The exact supplement shows next to the size the moment you select it, and again as its own line in the running total.

What if I pick the wrong centre shape now?

You can change it up until you commit to a specific diamond in Step 2. Your shape choice on this page pre-filters the diamond search to speed things up. If you land on the search and change your mind, change the filter and the setting adapts.

Can I mix natural and lab-grown diamonds?

Yes. Your centre diamond can be natural or lab-grown regardless of any accent diamonds on the setting. All combinations are supported.

Can I see this ring in person?

Yes. Book a private appointment at any of our four Australian showrooms, Sydney, Melbourne, Brisbane or Perth.

How long from order to delivery?

Six weeks from the moment your order is confirmed. Includes the six workshop stages plus insured overnight shipping.

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