Lab-Grown Diamonds · Honest Guide

Do Lab-Grown Diamonds Hold Value? An Honest Answer (2026)

By Tushar Leclerc · 7 min read

Last Updated: October 26, 2026

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This is the question the jewellery trade would rather you did not ask too plainly, so here is a plain answer. We sell lab-grown diamonds, and we are still going to tell you not to buy one as an investment. The honest case for a lab-grown diamond has nothing to do with resale, and understanding why actually makes it easier to buy well.

The honest answer: do diamonds hold their value?

No, not well, and this applies to mined diamonds just as much as lab-grown ones. The idea that a diamond is a store of value is one of the most successful pieces of marketing of the last century, but it does not survive contact with the resale market. Take almost any diamond ring back to a jeweller or list it secondhand, and the figure you are offered is a fraction of what you paid.

That is not a lab-grown problem. A mined diamond loses most of its retail price the moment it becomes secondhand too. The difference is only one of degree: mined stones have a thin resale market propped up by the perception of rarity, while lab-grown stones have an even thinner one. Neither is a sound way to store money.

So the honest framing is this. A diamond is a purchase, not an asset. Once you accept that, the entire decision gets simpler, because you stop paying for an imagined future resale and start paying for the thing in front of you.

Why retail markup kills resale

The reason almost no diamond holds its value is structural, and it is the same reason for both types of stone. The price on the tag is built mostly from cost that does not transfer to a second owner.

• Retail margin. A jeweller's markup, rent, staff and marketing are all baked into the shelf price. None of it comes back to you on resale.
• Setting and making. The gold, the labour and the design are a real cost new, but a buyer of your used ring values them at scrap and melt, not at what you paid.
• The dealer's margin, twice. Whoever buys your diamond to resell has to make a profit on it, so they buy low. You are effectively on the wrong side of the same markup a second time.

Put together, those layers mean a diamond typically resells for a small fraction of its retail price. This is not fraud or a quirk of lab-grown; it is how retail jewellery has always worked. Knowing it up front is what stops you overpaying for "investment-grade" language that does not mean anything.

The lab-grown resale trend

Lab-grown diamonds carry one extra pressure on resale that mined stones do not: the price of a brand-new one keeps falling. As growing capacity has expanded and the technology has matured, the cost to produce a gem-quality lab-grown diamond has dropped, and retail prices have followed.

That is excellent news if you are buying. The same budget buys a bigger or better stone every year. It is poor news for resale, because no secondhand buyer will pay yesterday's price when a brand-new equivalent is cheaper today. A falling new-stone price drags the used price down with it.

The sensible way to read this is as a consumer win rather than a warning. You are getting a real diamond at a price mined supply chains cannot match. The trade-off is simply that you should not expect to sell it on for anything close to what you paid, which, again, was never a good expectation for any diamond.

Round SolitaireFrom $1,105 Princess SolitaireFrom $1,120 Pear SolitaireFrom $1,087 Radiant SolitaireFrom $1,105 Pear HaloFrom $1,209

Insurance is not investment

People sometimes point to an insurance valuation as proof a diamond holds value. It does not work that way, and the distinction is worth understanding before you confuse the two numbers.

An insurance valuation is a replacement figure: what it would cost to buy the same ring new again at retail. It is deliberately set at full retail, sometimes higher, so a claim covers a brand-new replacement. It is not what anyone will pay you for the ring. Resale value, the figure that actually matters if you ever sell, is a different and much lower number.

It is still worth insuring a ring you love and wear daily, against loss, theft or damage. Just read the valuation for what it is: the cost to replace the ring, not evidence of what it would fetch. A lab-grown diamond is straightforward and inexpensive to replace, which is one quiet advantage when you actually wear the piece without worrying about it.

Buy for meaning, not money

If a diamond is not an investment, what is the case for buying one? The same case there has always been, now without the financial fiction attached. You are buying something to wear, to mark an occasion, and to keep for a lifetime. Those are the returns, and they are real.

This is where lab-grown earns its place. Because you are not paying the rarity premium, the same money buys a larger, cleaner, better-cut stone, or buys the ring you actually want for a good deal less. You get the full beauty of a real diamond, graded on the same scale by the same labs, for a price that leaves room in the budget for the things that do appreciate: a honeymoon, a home, a life.

So choose the stone that looks best to you and fits your life, not the one a sales pitch calls an asset. If you want the full background on how lab-grown diamonds are made, graded and priced, our complete guide to lab-grown diamonds covers it, and the lab-grown versus natural comparison weighs the two side by side.

Heart Hidden-HaloFrom $1,299 Emerald Hidden-HaloFrom $1,346 Cushion Split-ShankFrom $1,361 Marquise Split-ShankFrom $1,503 Asscher Split-ShankFrom $1,354

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