30-second answer
Lab-grown diamonds are generally not suitable as value-retaining or investment assets.
Its advantages lie in wearing performance and budget efficiency, not in secondary-market value. Because lab-grown diamonds can continue to be produced, and production costs and market prices have fallen markedly in recent years, future resale and buy-back prices are usually not encouraging.
But it should also be made clear: an ordinary natural diamond does not automatically hold value either. Whether a natural diamond has good value-retention potential depends on rarity, quality, size, laboratory report, purchase price, market demand, and distribution channels. For most buyers, a diamond ring should first be regarded as an emotional purchase and a piece of jewellery to wear, not as an investment product.
Why Are Lab-Grown Diamonds Not Suitable as an Investment?
Reason 1: Supply Is Not Naturally Scarce
Lab-grown diamonds can be produced continuously through technology and equipment. As production capacity expands, supply in the market can continue to rise.
Reason 2: Prices Fall Quickly
In recent years, lab-grown diamond prices have fallen significantly. When De Beers closed its Lightbox business, it also noted a sharp decline in wholesale prices for lab-grown diamonds. This shows that the lab-grown diamond market is more closely tied to production cost and supply-demand competition.
Reason 3: Limited Secondary-Market Acceptance
Because consumers can already buy a new lab-grown diamond at a relatively low price, it is difficult for second-hand lab-grown diamonds to command a strong premium.
Reason 4: Technological Progress Creates Substitution Pressure
As production technology becomes more mature, newer and cheaper lab-grown diamonds with better specifications may emerge, putting pressure on the value of older stones.
Do Natural Diamonds Automatically Hold Value?
Not necessarily.
Many consumers assume that natural diamonds always hold value, but the purchase price of an ordinary commercial natural diamond includes retail channels, branding, design, tax, and service costs, and it is usually difficult to resell at the original purchase price.
Situations in which a natural diamond is more likely to retain value or collection potential include:
- Large carat size with excellent quality.
- Outstanding colour, clarity, and cut combined.
- It hasGIAa highly recognised laboratory report such as
- Rare fancy-coloured diamonds or especially scarce categories.
- A reasonable purchase price.
- A clear market distribution channel.
For an ordinary engagement ring, the more important value is often emotional value, wear value, and commemorative meaning.
How Should the Value of a Lab-Grown Diamond Be Defined?
The value of a lab-grown diamond should not be defined mainly by “how much it can be sold for in the future”, but rather by:
- Achieving a stronger visual effect with a lower budget.
- Achieving a larger carat size for the same budget.
- Creating more design freedom.
- Satisfying a modern, rational, and transparent approach to consumption.
- Being suitable for everyday wear and fashion jewellery.
If a client accepts this, a lab-grown diamond is a sensible choice. If they expect it to hold value like a rare natural diamond, disappointment is likely.
What Should You Ask Yourself Before Buying a Lab-Grown Diamond?
- Am I comfortable with the possibility that its price may continue to fall?
- Do I have no intention of reselling it?
- Do I care more about the visual effect than about asset characteristics?
- Does my partner accept a lab-grown diamond?
- Will this ring one day need to serve as a family heirloom?
If several of the answers to these five questions are no, it is advisable to choose a lab-grown diamond with caution.
Celeste Bespoke recommendation
Celeste recommends distinguishing natural diamonds and lab-grown diamonds through three positioning models:
Natural diamonds: rare commemorative jewellery
Suitable for proposals, inheritance, high-end bespoke work, important milestones, and long-term preservation.
Lab-grown diamonds: visual jewellery for wearing
Suitable for budget efficiency, everyday wear, larger carat effects, and modern aesthetics.
Coloured gemstones / pearls / design jewellery: expressive jewellery
Suitable for storytelling, style expression, and the distinctiveness of bespoke work.
For clients hoping for value retention, Celeste should not promise that any diamond will necessarily increase in value, but instead provide an honest market explanation and multiple options.
FAQ
Q1: Can lab-grown diamonds be bought back?
Some channels may offer buy-back, but prices are usually weak and vary greatly by region and merchant.
Q2: Is a natural diamond always more value-retentive than a lab-grown diamond?
Not necessarily. Natural diamonds are rarer, but ordinary natural diamonds may also be bought back at a significant discount.
Q3: Is buying a lab-grown diamond a loss?
If you treat it as an investment, it may not be suitable; if you treat it as something to wear and enjoy emotionally, it can be very cost-effective.
Q4: Does an engagement ring have to be chosen for value retention?
Not necessarily. An engagement ring is first and foremost an emotional commitment; material value comes second. What matters most is that both partners share the same values.