Lab Grown Diamonds – real diamonds that don't cost the earth.
Whether crafting an engagement ring, wedding ring, or custom jewellery, we use ethical lab-grown diamonds – identical to natural diamonds except with a more sustainable origin.
Dream Bigger: Get a 2x larger diamond at the same price
Lab-grown diamonds are chemically, optically and physically the same as mined diamonds right down to the atom. Our diamonds are 40 - 50% larger than a mined diamond for the same price.
Using lab-grown diamonds means you get can a larger stone, use more stones or both without compromising quality or budget.
Get bigger and higher quality — no matter your budget.
same size
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Design your perfect lab-grown diamond engagement ring
Partner with our designers to make your dream lab-grown diamond engagement ring come to life.
Our team will guide you through the design process and provide practical style advice to make sure that what we create is perfect.
With unlimited revisions, we'll ensure perfection in every detail.
Meet us in our design studio or virtually - we can work with you anytime, anyplace.
Never worry about having a poor quality diamond
Forget the 4Cs with the Four Words quality standard.
We keep it simple for you, by picking the best-looking diamond possible for you.
The 4C's (Cut, Colour, Clarity, Carat) often complicate the process, either missing key features that make a beautiful, bright diamond or leading to overspending on features that don't matter.
Only the top 2% of diamonds meet our strict quality standards, meaning you will always get the best without paying extra.
Ready to get started?
How it works
1. Meet
We'll answer all your questions, provide estimates and guide you in crafting your dream piece. View 75+ samples in studio.
2. Design
Visualise your design with sketches and photorealistic 3D renders. Unlimited revisions until you're happy.
3. Sourcing
Whether diamond or gemstone (natural or lab), we'll curate & present the best stone for your confirmation.
4. Craft & Deliver
Crafted in 8 weeks – or 21 days expedited. Free pickup or discreet worldwide delivery.
Modern designs, crafted for a lifetime guaranteed
With detailed designs, luxury materials, and beautiful craftsmanship, all our jewellery comes with a lifetime manufacturing guarantee.
Quality we stand behind. Quality you can rely on.
Learn about our quality standardCommon Questions
Yes, they're real diamonds! They are physically, chemically and optically 100% the same as mined diamonds - down to the atom. The only difference is the origin. In fact, the FTC in the US ruled recently that a diamond is a diamond no matter whether it is grown in a lab or dug out of the ground.
No, not even experienced jewellers can tell the difference without using specialist equipment used by gem labs. Both lab grown and mined diamonds will test positive under normal diamond testers.
It's because the price of mined diamonds is well above fair market pricing.
The mined diamond industry often likes to talk about how diamonds are ‘rare’ and yes technically they are rare in the sense you have to move tonnes of dirt and dig giant holes to find them. But diamonds are one of the most common precious stones found compared to other precious gemstones like sapphires, rubies and emeralds.
Mined diamonds are more expensive not because they’re rare, but because the diamond mining companies restrict supply to keep prices artificially high.
Lab diamond prices on the other hand reflect normal, free market demand and supply - like most other gemstones and materials.
Neither mined diamonds nor lab grown diamonds hold their value. Both lab diamonds and mined diamonds lose about 40 - 50% of the resale value when bought by consumers.
The reason when you buy a diamond, you’re also paying for the jewellers' mark-up, any setting costs and taxes. When you go to sell the diamond the buyer will want to buy less than the current wholesale rate which is going to be about 40-50% less than what you bought it for. Mined diamonds have only kept up with inflation in the long term.
Diamonds (lab grown or mined) are not investments (unless you’re buying investment-grade diamonds which are millions of dollars).
Traditional jewellers say this to get you to spend more than you are comfortable with the justification ‘It’s an investment for the future’. If you just buy a lab grown diamond and put the savings in price into real investments - you will be much better off.
No, and neither are mined diamonds. Because we recreate what happens in the ground but inside a lab, our lab grown diamonds come out as raw stones each with their own unique imperfections — just like mined diamonds.
Yes, every Four Words lab grown diamond is accompanied by an independent certification and grading report from one of the two esteemed institutions: the International Gemmological Institute (IGI) or the Gemmological Institute of America (GIA).
Headquartered in Antwerp, Belgium, IGI stands as the world's premier independent authority on both mined and lab-grown diamond certification.
While, GIA, with its base in Carlsbad, California, is globally renowned as the leading certifier and grader of diamonds and other precious gemstones
Yes, exactly the same grades by the same labs. But there are other considerations to take into account — our gemmologists will pick the best diamonds according to our quality standards.
Lab grown diamonds are grown inside clean high-tech labs above ground.
You put a diamond seed (a thin wafer of diamond) inside the growing chamber, turn up the heat and pressure and mix in carbon gases.
The carbon from the gases breaks down and crystallises on top of the diamond seed over the course of a few weeks forming the 'rough diamond.' This rough diamond is then cut and polished exactly the same way as mined diamonds.
No – cubic zirconia is a completely different gemstone to diamonds. They are often used as diamond stimulants because they look similar to diamonds but are very cheap to produce. Although cubic zirconia are man-made, they are much easier to produce and are made from Silicon and Carbon (instead of just carbon like diamonds) and tend to 'cloud' over and scratch after a few months.
No - Although they look very similar, Moissanites are their own gemstones and have their own physical and optical properties. At Four Words we work with both lab grown diamond and moissanite.
When you invest in a lab-grown diamond, you can be confident that it is ethically sourced and conflict-free. While our jewellery itself has a 7x less negative environmental impact, we’ve collaborated with CarbonClick to offset any impact caused by the production process by more than 500%.
Explore our comprehensive guide on the difference between mined and lab-grown diamonds to learn more.
Absolutely! The ethical qualities and affordability have caused a surge in the popularity of lab-grown diamonds in NZ. More people can invest in high-quality diamond jewellery without breaking the bank.
Choosing the perfect diamond comes down to the four C’s: colour, clarity, cut, and carat. However, when you work with us, there’s no need to worry too much about the 4C’s. We use the highest quality lab-grown stones available. This translates to Ideal Cut, F colour, and VS clarity grade at minimum. This is higher than the Tiffany cut standard.
You can learn more about our standard here.
With lower production costs, lab-grown diamonds are more affordable than their natural counterparts. Even with our process and high standard, you can get 1 carat lab-grown diamond engagement ring from Four Words starting from around $4,500.
