So, you're thinking about a lab diamond engagement ring?
Whether you've just started your search or you've been deep in the rabbit hole of ring styles for months, you've probably come across the term "lab diamond" — and wondered what it actually means, and whether it's right for you.
At Seven Swans Fine Jewellery, we're a Brisbane-based fine jewellery studio specialising in antique-cut lab diamonds and bespoke engagement rings. We've helped countless couples find (or create) their perfect ring, and we want to share everything we know.
What is a lab diamond?
A lab diamond is a real diamond — chemically, physically, and optically identical to a mined diamond. The only difference is where it was grown: in a controlled laboratory environment rather than deep in the earth over billions of years.
Lab diamonds are graded by the same international bodies (like the IGI) using the same 4Cs — cut, colour, clarity, and carat — as mined diamonds. They're not simulants like cubic zirconia or moissanite. They are diamonds.
The benefits? They're typically 50–70% more affordable than mined diamonds of equivalent quality, and they come with a much cleaner ethical and environmental footprint.
Why antique cuts?
At Seven Swans, we specialise in antique diamond cuts — stones that were fashioned by hand before modern cutting technology existed. These include:
- Old Mine Cut — the predecessor to the modern round brilliant, with a cushion-like shape, high crown, and warm, candlelit glow
- Old European Cut — round with a smaller table and larger facets, producing a romantic, soft sparkle
- Rose Cut — flat-bottomed with a domed top, subtle and ethereal
- Moval — a rare antique hybrid between oval and marquise, full of personality
These cuts have a depth of character that modern brilliant cuts simply can't replicate. They catch light differently — more like a glowing ember than a disco ball — and they suit romantic, whimsical, and heirloom-inspired ring styles beautifully.
We source our antique-cut lab diamonds from specialist lapidarists who cut modern lab-grown rough using traditional antique techniques. The result is a stone with all the soul of an antique, with the ethical credentials of a lab diamond.
What does the custom process look like?
We know that designing a custom engagement ring can feel overwhelming — but it doesn't have to be. Here's how we work:
- Free consultation — We start with a relaxed conversation (in person in Brisbane or via video call) to understand your style, budget, and vision.
- Stone selection — We source antique-cut lab diamonds individually for each client. We'll present you with options that suit your brief and budget.
- Design — We work with you to design a setting that complements your stone. Whether you love something minimal and modern or ornate and antique-inspired, we'll bring it to life.
- Creation — Your ring is handcrafted by our expert goldsmiths. We keep you updated throughout the process.
- Delivery — Your finished ring arrives beautifully packaged, ready for the moment.
How much does a custom lab diamond engagement ring cost in Brisbane?
This is the question everyone wants answered! The honest answer is: it depends on the stone size, cut, and setting complexity. As a general guide:
- A 1ct antique-cut lab diamond engagement ring typically starts from around $3,500–$5,000 AUD
- A 2ct ring might range from $6,000–$10,000 AUD depending on the design
Because we source stones individually and work to your budget, we can often achieve more than you'd expect. Book a free consultation and let's talk about what's possible for you.
Ready to start?
Whether you're drawn to a ready-to-ship ring or want something designed just for you, we'd love to be part of your story.
Book your free consultation today — we can't wait to meet you.
