Well, here’s a confession from someone who has spent a good chunk of their adult life hovering over display cases, chatting with jewellers, and trailing behind brides-to-be trying to choose “the one” — the diamond world has changed dramatically. And honestly, it’s been fascinating to watch.
A decade ago, if you mentioned lab grown diamonds at a dinner party, you’d get raised eyebrows or that polite smile people do when they’re not entirely sure what you’re on about. Today? You’ll hear stories from friends who proudly show off their lab-created engagement rings, or couples who chose sustainable stones because it simply felt right. The industry didn’t just shift — it reinvented itself.
And if you’re trying to figure out where the best lab diamonds come from, what sets them apart, or whether they’re truly worth the growing hype, you’re not alone. I hear that question almost weekly from shoppers who want something beautiful but also something they can feel good about wearing.
So, let’s take a walk through the world of modern diamonds the way I see it — from the perspective of someone who’s worked around jewellery long enough to know that sparkle is only half the story.
Table of Contents
The Rise of Lab Grown Diamonds (and Why Australia Embraced Them So Quickly)
You might not know this, but Australians have been surprisingly early adopters of ethical and sustainable alternatives, especially when it comes to fashion and fine jewellery. Whether it’s reusable coffee cups or responsibly sourced gold, we tend to appreciate transparency.
Lab grown diamonds fit neatly into that cultural pocket.
Scientifically identical to mined diamonds, they’re created using advanced technology that replicates natural geological processes. The result? A real diamond — not an imitation — just one born in a lab instead of pulled from a mine.
What I’ve found really interesting is the emotional shift. People aren’t choosing lab diamonds just for the price savings anymore. They’re choosing them because they tell a story that aligns with modern values: sustainability, transparency, innovation.
And honestly, once shoppers see two diamonds side-by-side — one mined, one lab grown — it’s pretty hard to justify not at least considering the lab-made option.
What Actually Makes a “Good” Lab Diamond?
This is a question I get from customers constantly: “How do I know if I’m looking at the best lab diamonds, not just average ones?”
The truth is, not all lab grown stones are created equal. But don’t worry — the markers of quality are easy to understand once you know what you’re looking for.
1. The Cut Is Still King
Yes, colour matters. Clarity matters. Carat size definitely matters.
But if the cut isn’t right, even the most flawless diamond will look a bit… dull.
A well-cut lab diamond will catch the light in a way that’s almost hypnotic — balanced, crisp, and fiery. If you’re comparing stones and one seems to “dance” more than the other, your eyes aren’t playing tricks on you. That’s cut quality at work.
2. Check the Certification
Any diamond worth buying — mined or lab grown — should come with a grading report from a reputable laboratory (GIA, IGI, GCAL, etc.).
This is where you’ll find the specific details:
- Colour grade
- Clarity grade
- Cut grade
- Carat weight
- Growth method
- Any treatments
Think of certification like a diamond’s passport.
3. Consider the Growth Method
There are two main methods:
- HPHT (High Pressure High Temperature)
- CVD (Chemical Vapour Deposition)
While both produce beautiful diamonds, CVD is generally preferred for larger, high-quality stones because it tends to yield fewer visual imperfections. But again — certification will tell you everything you need to know.
4. Look for Reputable Producers
When I’m helping someone choose a stone, I always remind them that a trusted jeweller matters just as much as the diamond itself. Brands that specialise in lab grown diamonds tend to have stronger quality control and a better understanding of how to curate exceptional stones.
If you want a more detailed breakdown on what separates the good from the exceptional, this guide on the best lab diamonds is genuinely one of the most comprehensive resources I’ve come across.
Why Lab Diamonds Have Become a Fashion Favourite
It surprised me how quickly lab grown diamonds infiltrated the fashion world. Stylists, influencers, editors — everyone seems to be on board. And not just for the sustainability angle.
Here are a few reasons I’ve heard repeatedly from people behind the scenes:
1. Bigger Looks for Smaller Budgets
Let’s be blunt — diamonds are expensive.
But lab diamonds cost significantly less, and that makes higher carat sizes far more accessible.
Fashion stylists love this because a 2 or 3-carat stone looks incredible in editorial shoots. Brides love it because they can get their dream ring without sacrificing their honeymoon budget.
2. Design Freedom
Because lab stones are more affordable, designers are experimenting more freely:
- unique cuts
- bold halo designs
- coloured lab diamonds (yes, they’re a thing!)
- avant-garde jewellery pieces that play with symmetry and light
It’s like the industry finally got permission to have fun again.
3. Ethical Transparency Fits Modern Branding
Fashion has been under pressure to clean up its sustainability record. Lab grown diamonds support that shift. Marketing teams know it, and consumers feel it.
Are Lab Diamonds a Good Long-Term Choice?
I’ll be honest — this used to be a thorny question. Five years ago, the resale market for lab grown diamonds didn’t really exist, mainly because the industry was still so young.
Now? Things have matured a lot.
Second-hand marketplaces, jewellers, and auction platforms have all started incorporating lab diamonds into their valuations. It’s not exactly the same as antique mined diamonds with historical provenance, but the stigma is fading fast.
More importantly, most people buying engagement rings aren’t thinking about future resale value. They’re thinking about how the diamond looks and what it represents.
And in that sense, lab diamonds deliver beautifully.
If you love reading about iconic stones and want to understand how lab grown diamonds fit into the broader jewellery landscape, this piece on lab grown diamonds uses a surprisingly fun angle — comparing famous diamonds in history with their modern lab counterparts.
How to Actually Choose the Best Lab Diamond (From a Jeweller’s Perspective)
Let me give you the exact checklist I use when helping customers select a stone in-store. It’s simple, practical, and cuts through the noise.
1. Start With Shape
Round is classic. Oval is huge in Australia right now. Emerald cuts give that vintage elegance.
Pick the shape that speaks to you first — then evaluate quality.
2. Compare Stones Side-by-Side
No amount of reading can replace what your eyes can tell you.
Two diamonds with identical grades can still look different.
3. Prioritise Cut and Colour
In lab diamonds, colour is easier to control, so it’s worth choosing a whiter stone if you can.
I usually recommend:
- Colour: D–F
- Clarity: VS2 or better
- Cut: Excellent/Ideal
That combination typically delivers stunning brilliance without unnecessary upselling.
4. Don’t Ignore the Setting
The right setting can elevate a diamond dramatically.
A beautifully made band, strong claws, balanced proportions — these things matter just as much as the stone itself.
5. Choose a Jeweller You Trust
Honestly, this one matters more than people realise.
A good jeweller will:
- explain the differences transparently
- show you options without pressure
- provide proper certification
- offer warranty and resizing
If a jeweller ever seems evasive about certification or growth method, run — don’t walk — in the opposite direction.
The Emotional Side of Lab Diamonds
There’s something people don’t talk about enough:
Lab diamonds feel modern.
They represent innovation, progress, and a shift toward conscious consumption.
Most customers I’ve guided light up when they find “their” stone — not because it’s cheaper, or bigger, or more perfect, but because it feels aligned with how they want to express love or celebrate milestones.
One bride told me, “It just feels good knowing my ring reflects the world I want to live in.”
And that stuck with me.
So, What Are the Best Lab Diamonds?
After years of handling hundreds of stones, talking to suppliers, and watching the market evolve, here’s my personal take:
The best lab diamonds are the ones that combine exceptional cut quality, clear certification, reputable sourcing, and a design that genuinely resonates with the wearer.
It’s not purely about specs on paper. It’s about the moment someone slips the ring onto their finger and their face lights up. That’s the real indicator of having chosen the right stone.
A Final Thought
If you’d asked me ten years ago whether lab grown diamonds would redefine the jewellery world, I probably would’ve shrugged and said, “Maybe in a sci-fi future.”
Yet here we are — and the shift feels both inevitable and exciting.
If you’re considering a diamond right now, whether for an engagement, a milestone birthday, or simply because you want something beautiful that catches the light just right, don’t overlook lab grown stones. You might be surprised — truly surprised — by how much emotion, value, and pure sparkle they bring into the picture.