Lab-Grown vs Natural Diamonds: Positioning Tips

In mid-2015, a 1.5-carat lab-grown diamond sold for around $10,750. By 2025 the same stone was $1,455, a drop of 86%, according to figures the Natural Diamond Council compiled from analysts Edahn Golan and Paul Zimnisky. That one line on a price chart is the most important thing a jeweler needs to understand about lab-grown, and most of the advice floating around quietly ignores it. The question was never whether lab-grown diamonds are real. They are optically and chemically identical to mined stones. The real question is what you do when one side of your diamond case is built on a material that gets cheaper every quarter, and the other trades on scarcity. Get it right and you serve more customers than ever. Get it wrong and you sell depreciating inventory as an heirloom, which is the one mistake the category cannot afford.

It Is a Positioning Decision, Not Just a Product Choice

Where you stand on lab-grown says something about your brand before a customer ever asks a price. The choice should be deliberate and consistent with your brand positioning and your customer, not an afterthought you backed into because a supplier had stock to move.

Two honest stances, and one bad default

A heritage house leaning into natural is making a statement about rarity and tradition. A modern label built on lab-grown is signaling accessibility and contemporary values. Both work, and the brands that picked a lane prove it. Pandora went all in on lab-grown and reframed it as everyday fashion rather than a cheaper engagement stone. Brilliant Earth carries both and turns radical transparency into the brand itself. A small heritage jeweler can lean the other way and own “the natural stone, done properly.” Three coherent answers. What does not work is the unspoken fourth option: carrying both with no point of view, letting customers sort it out, and hoping the margin lands somewhere. That is not a stance. It is a shrug, and shrugs do not build brands. The jewelers struggling right now are mostly the ones who treated lab-grown as a stocking question instead of a strategy question, and customers can feel the difference the moment they walk up to the case.

Lab-Grown Is a Technology Product, Not a Store of Value

Here is the part the glossy explainers skip. Lab-grown prices are not drifting down gently. They are in a multi-year freefall, and it changes everything about how the stone should be sold.

The price only moves one way

You do not need the full spreadsheet to feel the point. A flawless three-carat lab-grown that retailed near $28,900 in 2020 went for about $3,900 five years later, roughly one-eighth, per Zimnisky data cited by the Financial Times. A comparable mined stone held most of its value over the same stretch. The grown one lost seven-eighths while the technology got cheaper and better, which is exactly what technology does. That is the whole story, and it points in one direction only.

Why De Beers could not hold the line

De Beers saw this coming and still got run over. It launched Lightbox to commoditize lab-grown at a flat, deliberately unglamorous price, hoping to brand it as fun costume jewelry rather than a diamond substitute. Chinese CVD and HPHT producers kept improving quality and cutting price until Lightbox lost its edge, and the unit shut down in 2025. The lesson is blunt: you cannot brand your way out of a commodity. When anyone can grow the same stone, the price follows production cost down, and no amount of clever marketing props it up. If the company that effectively invented modern diamond marketing could not hold a price floor, neither can your store. Plan around the current, not the hope.

What this means for how you stock and talk

A lab-grown diamond behaves like a piece of consumer electronics, where the same money buys more every year, not like gold. Price it that way, talk about it that way, stock it that way. The one thing it is not is a store of value, and any sales script that implies otherwise has a short shelf life and a long tail of upset customers.

The Margin Trap Nobody Mentions

An 80% margin that makes you fewer dollars

On paper, lab-grown looks like a gift. Retail margins on it have climbed past 80%. Then you read the footnote. As analyst Edahn Golan points out, that fat margin is not producing fatter profit, because retail prices and your costs are falling faster than the markup climbs. You can run an 80% margin and pocket fewer dollars per sale every single year. A big percentage of a shrinking number is not a strategy. It is a slow leak with good optics.

The inventory risk natural diamonds do not carry

Buy six months of natural stock and its replacement cost barely moves. Buy six months of lab-grown and part of that value can evaporate before it sells, because next quarter’s stones cost less and the customer knows it. The freefall finally started to slow in 2025, which is the first good news the category has had in years. Slowing is not stopping. Buy shallow, turn fast, and price against a number that still drifts down.

Position Each on What Is Actually True

Sell both well and you have to position each on its own honest strengths, not let them blur into one muddled pitch. The frames are not interchangeable, and pretending they are is where trust goes to die.

Natural: rarity, heritage, relative value

Frame natural diamonds around scarcity, story, and a resale value that holds far better in relative terms. This is the milestone stone, the one bought to mark something and, fairly or not, to be passed down. The buyer is paying for permanence and meaning, so sell permanence and meaning.

Lab-grown: access, size, fashion (and not investment)

Sell lab-grown for what it is genuinely great at, and be specific about it:

A two-carat look on a one-carat budget.
A fashion piece meant to be enjoyed now, not insured for 2060.
An entry point for a younger buyer who will be back.
A second or third stone for someone who already owns the milestone ring.

What you never do is sell lab-grown as the same thing that lasts forever. It is the same thing optically. It does not hold value the same way, and pretending otherwise is the claim that detonates the relationship the first time a customer prices their stone for insurance or resale. Helping the buyer understand that trade-off honestly is the whole job, and it is what makes you the advisor instead of the salesperson, which ties straight into the ethics and accessibility story a lot of these buyers already care about.

Why Selling Both Works, When You Keep Them Distinct

The numbers that make ignoring it impossible

In five years lab-grown went from a curiosity to roughly one in six diamonds sold at US retail, and in engagement rings more than half of buyers now choose it, per market trackers Tenoris and The Knot. Ignoring it means turning away most of the people walking in to get engaged. Stocking both also casts you as a trusted, unbiased guide rather than a partisan defending one side, which is exactly the posture that closes a high-consideration sale.

Keeping them from cannibalizing each other

The discipline is to merchandise them distinctly so the cheaper option does not quietly eat the other:

Separate cases. Side by side at the same price-per-carat, lab-grown always wins on size, and natural loses by default.
Separate stories. Heritage and permanence for one, access and fashion for the other. Never the same script.
Separate price logic. Natural priced on scarcity, lab-grown priced on a moving market you re-check often.

Remember that De Beers built Lightbox as a separate brand for exactly this reason, and it still got caught in the price war. Distinct positioning is not optional. It is the only thing standing between two clear offers and one confusing case where everything looks the same and the customer defaults to cheapest.

Transparency Is Now a Competitive Weapon

The claims to stop making

The category is awash in fuzzy claims, especially around sustainability and value. Even the Natural Diamond Council, hardly a neutral party here, notes that growing diamonds is energy-intensive, with reactors held at roughly 2,000°F. Take that with the appropriate pinch of salt given who is saying it, but the underlying point holds: “lab-grown is automatically green” is a marketing line, not a settled fact, and shoppers are getting wise to it. Same goes for any hint that a grown stone will hold its price.

What straight disclosure sounds like

Disclose every time whether a stone is grown or mined, without being asked. Be honest about resale and value rather than letting a customer assume. Better yet, make that honesty a visible part of the brand instead of a line you mumble at the close: the jeweler known for telling people the uncomfortable truth about resale is the one they come back to, and the one whose name they hand to a friend. Let them choose instead of steering them toward whatever pays you more. The jeweler who shoots straight earns the trust the entire purchase depends on. The one who blurs the line is trading a lifetime relationship for one slightly fatter ticket, which in this category is a genuinely bad trade.

Where Jewelers Get Lab-Grown Wrong

The mistakes cluster around avoidance, confusion, and wishful pricing:

Ignoring it, and losing the majority of engagement-ring shoppers who now want it.
Disparaging it to defend natural, which reads as biased and a decade behind.
Blurring the two until neither is positioned and the cheaper stone eats the dearer one.
Selling lab-grown as an appreciating heirloom, the claim most likely to come back as a furious customer.
Buying deep inventory and watching it depreciate on the shelf.
Steering by margin instead of guiding by need, the fastest way to lose the advisor role that made you the trusted choice.

So treat lab-grown versus natural as a deliberate positioning decision, not a stocking reflex. Understand that lab-grown is a fast-depreciating technology product and price it like one. Watch absolute profit, not just margin percentage. Offer both if it serves your customer, keep them distinct, and stay relentlessly transparent. Handled this way, the lab-grown shift is not a threat to defend against but a chance to serve more buyers and become the market’s most honest guide while everyone else is still arguing about it. For how to read this alongside the other forces reshaping the category, see how to adapt your jewelry brand to 2026 consumer trends.