Do Lab-Grown Diamonds Hold Value?
No. Lab-grown diamonds do not hold their value in any meaningful sense. Prices have fallen approximately 70% between 2022 and 2024, and a lab-grown diamond purchased for $1,200 may resell for $50 or less on the secondary market. There is currently no established resale infrastructure comparable to the natural diamond market, and the structural forces driving prices downward — improving manufacturing efficiency, expanding production capacity, and intensifying competition — show no sign of reversing.
This is not a temporary market dip. It reflects the fundamental economics of a manufactured product whose supply can be scaled without limit.
The Numbers
The price trajectory tells a clear story:
- In 2020, a lab-grown diamond sold for roughly 30–40% of the price of a comparable natural diamond.
- By 2024, that ratio had fallen to roughly 5–15%.
- A 1 ct lab-grown round brilliant (G colour, VS2 clarity, Excellent cut) currently sells for approximately $300–800. The equivalent natural diamond sells for $5,000–8,000.
This decline is not cyclical. It mirrors the cost curve of any manufactured good whose production technology is improving and whose supply is scaling — similar to the trajectory seen in LED lighting, solar panels, and consumer electronics.
Why the Value Erodes
Three structural factors make lab-grown diamond depreciation fundamentally different from normal market fluctuations:
Unlimited supply potential. Natural diamond supply is geologically finite — there are no new kimberlite pipes forming, and existing mines are depleting. Lab-grown diamond supply is limited only by how many reactors producers build. Manufacturing capacity has expanded dramatically, particularly in India and China, and continues to grow. When supply can increase without constraint, prices follow a downward curve.
Continuous technology improvement. CVD and HPHT production methods improve each year. Growth rates accelerate, energy efficiency rises, and yields increase. Every improvement lowers the per-carat production cost — and that lower cost flows through to retail prices. A lab-grown diamond bought today competes, at resale, against new diamonds that cost less to produce.
No resale market infrastructure. The natural diamond industry has centuries-old secondary markets: auction houses, estate jewellers, and specialised diamond dealers who buy and sell natural stones routinely. Lab-grown diamonds have no equivalent infrastructure. There is no established channel through which a private buyer can resell a lab-grown diamond at a meaningful price. Most jewellers and dealers will not purchase used lab-grown diamonds because the replacement cost of a new stone is lower.
The Resale Reality
To be direct: if you buy a lab-grown diamond expecting to sell it later and recover a reasonable portion of your investment, you will be disappointed.
A natural diamond sold on the secondary market typically fetches 30–60% of its original retail price, depending on quality, size, and market conditions. The discount is significant but measured in percentages.
A lab-grown diamond, by contrast, faces a resale discount measured in orders of magnitude. A stone bought for $1,200 may sell for $50 or less — if a buyer can be found at all. This is because any potential buyer of a used lab-grown diamond can purchase an equivalent new stone for less than what the original buyer paid, thanks to ongoing price declines.
The Comparison to Technology Products
A useful analogy: lab-grown diamonds behave like consumer electronics from a value perspective. A new smartphone is worth significantly less the day after purchase, and even less a year later when the next model arrives at a lower price point. The phone still works perfectly — the camera still takes photos, the screen still displays images — but its market value has declined because newer, equivalent products are available for less.
Lab-grown diamonds follow the same pattern. The diamond still sparkles. It is still beautiful. It still has the same physical properties. But its market value declines because equivalent new diamonds are continuously entering the market at lower prices.
Natural diamonds do not follow this pattern because their supply cannot be manufactured. A natural diamond mined fifty years ago is no less rare than one mined today — arguably more so, as mines deplete.
What This Means for Buyers
None of this means a lab-grown diamond is a bad purchase. It means it is a different kind of purchase.
If value retention matters — for instance, if you are choosing a diamond for an engagement ring that you might upgrade, resell, or pass down — a natural diamond has a materially stronger track record. The stone holds its value more consistently, and the secondary market is well-established.
If beauty per budget is the priority — and you are comfortable treating the diamond as a consumable luxury rather than a store of value — a lab-grown diamond delivers more visual impact for less money. It is the same material, the same sparkle, the same physical diamond. The trade-off is that its financial value will not endure.
Understanding this distinction before you buy is the most important thing. There is no wrong choice — only uninformed ones.
A Note on "Investment"
Neither natural nor lab-grown diamonds should be purchased primarily as financial investments. Diamonds are luxury goods, not financial instruments. However, natural diamonds — particularly rare specimens such as large stones, fancy colours, and exceptional qualities — have historically appreciated in value. Typical commercial-grade natural diamonds may not appreciate, but they hold value far more reliably than any lab-grown stone.
Lab-grown diamonds, regardless of quality or size, should never be considered stores of value. Their pricing trajectory makes this clear.
Learn More
- Value & Market Behaviour — detailed analysis of lab-grown pricing trends, the 70% decline, and secondary market dynamics
- Natural vs Lab-Grown — comprehensive comparison covering appearance, value, and documentation
- Natural vs Lab-Grown Definitions — the official definitions from FTC, GIA, and trade bodies