No, lab-grown diamonds are not a financial investment, and neither are natural diamonds. Both lose value the moment they are bought, and both are best understood as jewellery rather than assets. A lab-grown diamond will not appreciate over time, and you should not buy one expecting to resell it at a profit.
What a lab-grown diamond does offer is the full beauty, hardness, and certified quality of a natural diamond for 60 to 70% less, which means more of your budget goes into the stone you actually wear rather than a resale value you will likely never realise.
This guide gives you the honest picture on resale, value retention, and what actually matters when you buy.
Do Lab-Grown Diamonds Hold Their Value?
Lab-grown diamonds do not hold their value in resale terms, and this is the single most important thing to understand before buying one. If you sell a lab-grown diamond second-hand, you will typically recover a small fraction of what you paid. This is normal for diamond jewellery and is not unique to lab-grown stones.
The reason is supply. Lab-grown diamonds can be produced continuously, and as production has scaled, prices have fallen year on year. A stone bought today is competing against newer, often cheaper stones on the resale market tomorrow. That keeps resale values low.
The honest takeaway: buy a lab-grown diamond for the ring on your finger, not for a future sale. If resale value is genuinely your priority, diamonds of any kind are the wrong purchase.
How Does This Compare to Natural Diamonds?
Many buyers assume natural diamonds are a sound investment. In reality, they are not either. A natural diamond also loses a significant portion of its retail value the moment it leaves the shop, often selling second-hand for 25 to 50% of the original price.
The key difference is the starting price. Because lab-grown diamonds cost 60 to 70% less than natural diamonds at identical specifications, you are risking far less money on a purchase that, in both cases, is not a financial asset.
Put simply: if both stones depreciate, the lab-grown stone costs you far less to own and enjoy.
| Factor | Lab-Grown Diamond | Natural Diamond |
|---|---|---|
| Appreciates over time | No | No |
| Typical resale return | Low | Low to moderate |
| Purchase price | 60 to 70% lower | Baseline |
| Money at risk | Far less | Far more |
| Best understood as | Jewellery | Jewellery |
Why “Investment” Is the Wrong Lens
The idea that a diamond should be an investment comes from decades of marketing, not from financial reality. Diamonds are not a regulated asset class, they have no guaranteed buyer, and resale depends entirely on finding someone willing to pay. Treating any diamond as an investment sets up the wrong expectation.
A far more useful question than “will this hold its value?” is “am I getting genuine quality and beauty for what I am paying?” On that measure, a lab-grown diamond performs exceptionally well.
You receive a real diamond, chemically and optically identical to a natural one, with the same hardness and the same IGI certification, at a fraction of the cost.
What Actually Determines a Lab-Grown Diamond's Worth?
If resale is not the point, value comes from buying a stone that is genuinely well made. The four things that determine a lab-grown diamond's real worth, the qualities you see and wear every day, are the 4Cs:
- Cut: Excellent or Very Good. The most important factor. Cut controls brilliance and how large the stone looks. Never compromise here.
- Colour: G to I. Appears white in 18K gold settings. There is no benefit to paying for D to F.
- Clarity: VS2 to SI1. Eye-clean at normal carat weights, with no visible inclusions.
- Carat: Choose last, once cut, colour, and clarity are set.
A well-cut, IGI-certified stone delivers lasting beauty and durability, which is the only kind of value a diamond reliably holds.
For the full framework, read How to Maximize Diamond Size on a Budget.
The Real Value: More Diamond for Your Money
Here is the practical case for lab-grown, framed correctly. With a €2,000 budget, a lab-grown diamond buys a 1.00 to 1.25ct IGI-certified, Excellent-cut stone in 18K gold. The same €2,000 buys roughly a 0.40 to 0.50ct natural diamond of equivalent quality.
You are not losing money by choosing lab-grown. You are choosing to put your budget into a larger, higher-quality stone you wear every day, rather than into a resale premium that, for natural diamonds, mostly evaporates the moment you buy.
For most people, that is a far better use of the same money.
Browse our lab-grown diamond engagement rings and eternity bands to see what your budget buys in practice.
Frequently Asked Questions
Q1. Are lab-grown diamonds a good investment?
No. Lab-grown diamonds are not a financial investment, and neither are natural diamonds. Both depreciate from retail price and should be bought as jewellery, not as assets. The advantage of lab-grown is that you pay 60 to 70% less for the same quality, so far less money is tied up in a non-appreciating purchase.
Q2. Do lab-grown diamonds hold their value?
In resale terms, no. You will typically recover only a small fraction of the purchase price if you sell second-hand. This is true of natural diamonds too. Buy a lab-grown diamond for the stone you wear, not for resale.
Q3. Will lab-grown diamonds be worth anything in the future?
They will retain value as jewellery, a real, durable, certified diamond you can wear for a lifetime, but not as a financial asset. As production grows, resale prices are likely to stay low, so do not buy expecting future financial return.
Q4. Are natural diamonds a better investment than lab-grown?
Not meaningfully. Natural diamonds also lose most of their retail value on resale. The main difference is that natural diamonds cost far more upfront, so you risk more money on a purchase that is not a true investment in either case.
Q5. If they do not hold value, why buy a lab-grown diamond?
Because you get a genuine diamond, identical in chemistry, hardness, and appearance to a natural one, with full IGI certification, at 60 to 70% less. Your budget goes into a larger, better stone you wear daily rather than into resale value you are unlikely to recover.
Q6. Can I sell my Dileti lab-grown diamond later?
You can sell any diamond second-hand, but expect a low return, as with all diamond jewellery. A Dileti diamond's lasting value is in its certified quality and daily wear, not in resale.
