I still remember the first time I held a diamond necklace under the shop light — the way it caught the light, the tiny flashes of fire that seemed to dance inside it. There’s something timeless about diamonds. They’ve always carried this air of romance and success, the kind of beauty that feels both natural and deliberate. But lately, that old sparkle has found new meaning. Because the diamonds we’re falling for now? They’re not always dug from the ground. More and more, they’re grown in a lab.

As a jewellery writer who’s spent years talking to gemologists, designers, and everyday buyers across Australia, I can honestly say — the rise of lab grown diamond necklaces has been one of the most fascinating shifts in modern luxury.

What Makes Lab Grown Diamonds So Special?

Let’s start with what they actually are — because there’s still a lot of confusion out there. Lab grown (or lab created) diamonds aren’t “fake” diamonds. They’re not cubic zirconia, moissanite, or some kind of glass imitation. They’re real diamonds. Chemically, physically, optically — everything. The only difference is where they’re born.

Instead of forming underground over millions of years, they’re created in highly controlled labs that replicate the natural diamond-growing process. A tiny diamond seed is placed in a chamber that mimics the same temperature and pressure as the Earth’s mantle. Over a few weeks, carbon atoms crystallise around it until — voilà — a diamond is born.

I’ve visited one of these labs before, and let me tell you, it’s oddly poetic. There’s something surreal about seeing raw beauty emerge from science. It’s like watching the universe speed up evolution.

Why Australians Are Falling in Love With Them

When I first started hearing about lab created diamonds a few years ago, I’ll admit I was sceptical. I thought, “Surely people will still want the ‘real’ thing.” But the tide has turned — and fast.

Here’s why.

1. They’re Ethical — and That Matters Now More Than Ever

We’re a conscious bunch, us Aussies. We recycle, we talk about climate change, and we care about where our stuff comes from. Traditional diamond mining has long carried ethical and environmental baggage — everything from habitat destruction to questionable labour practices.

Lab grown diamonds, by contrast, offer transparency. You can trace their creation from start to finish. No conflict zones. No questionable mining practices. Just technology and carbon.

And for many buyers, that’s not just a perk — it’s a dealbreaker. They want to wear something beautiful without the guilt.

2. They’re Stunning — and Practically Indistinguishable

I once brought two necklaces — one with a mined diamond, the other with a lab grown — to a dinner party. I passed them around and asked my friends to guess which was which. No one got it right. Not even my mate who works in fashion retail.

You might not know this, but even professional gemologists often need advanced tools to tell them apart. To the naked eye, a 1-carat lab grown diamond sparkles just as fiercely as its mined twin — same brilliance, same fire, same clarity.

3. They’re More Affordable — But Don’t Look “Cheaper”

This is where things get really interesting. On average, a lab grown diamond can cost 30–40% less than a mined one of the same size and quality. That price difference means more people can afford to upgrade in carat size or invest in custom designs without breaking the bank.

I recently spoke with a Sydney couple who bought a custom lab grown diamond necklace for their anniversary. They told me, “We’d rather spend the extra savings on a holiday — the diamond looks identical anyway.” And honestly? They had a point.

The Beauty of Modern Craftsmanship

Jewellery, at its best, tells a story. It’s about the craftsmanship, the design, the emotion behind it. And when it comes to lab grown diamond necklaces, designers are really starting to push creative boundaries.

Without the constraints of traditional diamond sourcing, jewellers can experiment more — unique cuts, sustainable metals, and bespoke settings. There’s this freedom now to design ethically without compromising on luxury.

Some of the most elegant pieces I’ve seen lately come from Australian brands that use recycled gold and lab grown diamonds together. The result? Guilt-free glamour that feels modern, thoughtful, and timeless all at once.

If you’re curious, lab grown diamond necklaces like these are now available from several reputable jewellers online, many of whom specialise in sustainable and traceable fine jewellery.

A Quick Reality Check

Now, I won’t pretend everything about lab diamonds is perfect. There’s still some debate in the industry. A few old-school jewellers argue that because they’re not rare, they might not hold value in the same way as mined diamonds.

That’s true — resale markets for lab grown stones are still developing. But then again, how many people really buy jewellery as an “investment”? Most of us buy it because it means something. It’s a symbol of love, a gift to ourselves, or a way to celebrate milestones.

And when it comes to emotional value — the sparkle that makes your heart skip a beat — lab grown diamonds deliver that in spades.

The Science Is Kind of Amazing

I’m no scientist, but the tech behind these gems fascinates me. There are two main ways to create a lab diamond: HPHT (High Pressure, High Temperature) and CVD (Chemical Vapour Deposition).

• HPHT mimics natural formation — extreme heat and pressure, just like in the Earth’s mantle.
• CVD, on the other hand, uses a gas chamber to layer carbon atoms onto a seed diamond. It’s a bit like 3D-printing a gemstone.

Both methods produce genuine diamonds, though CVD tends to offer more control and purity.

I was surprised to learn that even some high-end jewellers now prefer lab diamonds because they can choose stones with fewer inclusions and perfect symmetry — things that Mother Nature doesn’t always deliver.

It’s About Values as Much as Style

There’s something quietly powerful about knowing your jewellery aligns with your values. For younger Australians especially, that’s becoming a huge factor in what they buy. Sustainability isn’t just a trend anymore — it’s part of our identity.

When you give someone a lab grown diamond necklace, you’re not just saying “I love you.” You’re also saying, “I care about our planet, and I care about doing things the right way.”

And in today’s world, that message shines as brightly as any stone.

A Little Buyer’s Wisdom

If you’re thinking about buying one, here are a few tips I’ve picked up along the way:

• Buy certified. Always look for certification from GIA, IGI, or another reputable gem lab. It’s your assurance of quality.
• Check the setting. A beautifully made setting enhances the diamond’s brilliance — whether it’s a minimalist solitaire or a halo design.
• Compare sparkle, not stories. If someone tries to tell you lab diamonds “aren’t real,” ask them to look again. Then watch their face when they can’t tell the difference.
• Educate yourself. It’s worth reading about how to distinguish real from imitation stones — this guide on lab created diamonds explains it well.

Where This Trend Is Heading

Honestly, I think we’re just getting started. As more designers, celebrities, and retailers embrace lab diamonds, they’ll only become more mainstream — and more desirable.

We’ve already seen luxury brands release collections featuring only lab grown stones. Even some engagement ring traditions are evolving — couples are proudly saying, “We chose this because it reflects who we are.”

And maybe that’s the point. Jewellery has always evolved with culture. Just like yellow gold made a comeback, or rose gold became a sensation, lab grown diamonds are shaping the next chapter in fine jewellery — one built on transparency, technology, and conscience.

A Final Thought

When you hold a lab grown diamond necklace in your hand, it’s easy to forget it didn’t come from deep underground. It sparkles just the same. But what makes it even more beautiful, in my view, is what it represents — human ingenuity, progress, and a gentler footprint on the planet.

Whether you’re buying for love, for fashion, or simply for yourself, it’s comforting to know you don’t have to choose between luxury and responsibility anymore.

Sometimes, the most brilliant things aren’t the ones we find — they’re the ones we create.