The diamond guide, without the sales pitch
Most diamond education online is written by someone with a side to sell: lab-grown-only brands say natural is a scam, natural-only jewellers say lab-grown is worthless. We sell both, our designers aren't on commission, and every Honey & Lee design is quoted both ways. So here's the version with the prices left in.
What diamonds actually cost in Australia right now
The same stone, specified the same way, as sold in Australian online retail in October 2026:
| Stone | Typical price (AUD) |
|---|---|
| Natural, GIA certified | ≈ $8,000–$8,500 |
| Lab-grown, IGI certified | ≈ $1,400 |
That gap is why 61% of engagement rings bought in the US in 2025 had a lab-grown centre stone, up from 52% the year before. Australia publishes no equivalent figure, but every jeweller is seeing the same shift.
Both markets have also been falling. Natural 1 ct prices have dropped every year since 2022 and sit at roughly half their end-2021 level; lab-grown wholesale fell 26% in 2025 alone. Whichever you choose, this is why we buy your stone to order on the day you commit, rather than selling you old stock at old prices — the cost build page shows exactly how the stone price flows through to your ring.
Lab-grown vs natural: the real differences
A lab-grown diamond is a diamond — same carbon, same crystal structure, same hardness, same sparkle. A gemmologist can't tell them apart by eye; it takes lab equipment reading growth patterns. The differences that actually matter:
- Rarity. Natural stones formed over a billion years ago and the supply is what it is. Lab-grown supply is industrial and growing, which is why prices keep falling.
- Price for size. The same budget buys roughly double the carat weight — or the same weight with $6,000+ left over for the setting, the honeymoon, or the mortgage.
- Value over time. Covered honestly below, because this is where other guides go quiet.
- Sentiment. Some people feel strongly about a billion-year-old stone; some feel equally strongly about not paying for rarity they can't see. Both are legitimate. Nobody else's opinion goes on your hand.
The resale question, answered honestly
No engagement ring — natural or lab-grown — is an investment, and any jeweller who implies otherwise is selling you something. The honest version:
- Natural diamonds resell. There is a liquid second-hand market, but you'll typically recover a fraction of retail — the stone trades back near wholesale, and the setting's labour isn't recoverable. Natural prices have also fallen for four consecutive years, so "it holds its value" deserves an asterisk right now.
- Lab-grown diamonds effectively don't resell. Wholesale is around US$60 a carat and falling; assume the stone's resale value is close to zero and buy it for what it is — a beautiful object, not an asset.
The ten-year view: if you buy lab-grown, the win is the $5,000–$7,000 you didn't spend — not what the stone will be worth. If you buy natural, buy it because you want the real thing on her hand, not as a store of value. Either way, put the difference into a setting built to last: that's the part of the ring that actually determines whether it survives.
The 4Cs — where to spend and where to save
| C | What it really is | Our advice |
|---|---|---|
| Cut | How well the stone is proportioned to return light. This is the sparkle. | The one worth paying for. We only buy Excellent or Very Good — a poorly cut large stone looks like glass. |
| Colour | How close to colourless, graded D (icy) to Z (warm). | D–F is colourless; G–H looks identical on a hand and costs much less. In yellow or rose gold you can go warmer still. |
| Clarity | Internal marks, graded under 10x magnification. | Eye-clean is the goal, not the grade. VS2 is usually the sweet spot; we check every stone by eye, not just by certificate. |
| Carat | Weight — not size. | Prices jump at 0.50 / 1.00 / 1.50 / 2.00 ct. A well-cut 0.90 ct looks the same as a 1.00 ct and costs 15–20% less. We'll always show you the stone under the magic weight. |
GIA vs IGI certification
A certificate is an independent lab's grading of your exact stone — never buy a centre stone without one. GIA (Gemological Institute of America) is the benchmark for natural stones and what we use for natural centres. IGI (International Gemological Institute) grades the majority of the world's lab-grown stones and is the standard there. Both are legitimate; what matters is that the certificate number is in your quote, the stone is laser-inscribed or plotted to match it, and you receive the original report with your ring. Ours ships in the box, alongside an independent Australian valuation for insurance.
How to decide
- Set the total budget first — ring, not stone. Here's what budgets actually buy.
- Ask for every design quoted both ways. We do this by default: same setting, natural and lab-grown centre, side by side with certificates.
- Look at stones, not spreadsheets. We put three to five certified options in front of you and point out the differences you can and can't see — including when the cheaper stone is the right call.
Sources: Australian online retail listings for 1 ct G VS1 stones, October 2026; The Knot 2026 Real Weddings Study (via Rapaport); Rapaport RapNet 1 ct index 2022–2026; JCK and IDEX lab-grown wholesale reporting 2025–26.