Every year, lab-grown diamonds win over more couples and individuals looking for a precious stone that is ethical, affordable and strictly identical to a natural diamond. Yet, despite their growing popularity, they are still surrounded by many misconceptions: some people think they are less "real," others fear they will lose all their value, or confuse them with a simple imitation. At Laveran Paris, a jeweler specializing in lab-grown diamonds since our founding, we hear these questions almost daily in our workshop in Paris's 9th arrondissement. It is time to answer them once and for all, with rigor and transparency.
In this guide, we review the 10 most widespread misconceptions about lab-grown diamonds, drawing on gemological standards (GIA, IGI, HRD), market data and our experience as diamond artisans.
A fast-growing market that is still little understood
In just a few years, the lab-grown diamond has gone from technological curiosity to an alternative fully recognized by the jewelry industry. Major heritage houses now dedicate entire collections to it, and couples' demand for jewelry that is ethical, traceable and accessible keeps growing. Yet the speed of this change leaves little time for misconceptions to fade: many buyers still reason with the benchmarks of natural diamonds, even though lab-grown diamonds follow their own logic of production, price and value. Our role, as a specialized house, is precisely to untangle myth from gemological reality.
Misconception #1: "A lab-grown diamond is not a real diamond"
This is the most common confusion, and the easiest to correct. A lab-grown diamond has exactly the same chemical composition (pure crystallized carbon), the same crystal structure and the same optical and physical properties as a diamond mined from the earth. The international standard ISO 18323 states it explicitly: a lab-grown diamond is a diamond in its own right, the only difference being where it formed.
What actually changes
The only distinction lies in its origin: a few weeks in a laboratory versus several million years beneath the earth's crust. No gemologist or jeweler can tell the two stones apart with the naked eye or even under a standard microscope—only specialized spectroscopic equipment can differentiate them, precisely because a lab-grown diamond is a diamond.
To learn more about this essential distinction, read our article What Is the Difference Between a Lab-Grown and a Natural Diamond?
Misconception #2: "It's the same thing as an imitation or a cubic zirconia"
This confusion deserves to be cleared up plainly, because it goes to the very nature of the stone. A diamond simulant—cubic zirconia, lab-created white sapphire or glass—has neither the chemical composition, nor the hardness, nor the optical properties of a diamond. It is simply a stone that looks like a diamond.
A lab-grown diamond, by contrast, is chemically and physically a diamond. Moissanite, another popular alternative, is also a distinct stone, made of silicon carbide rather than pure carbon.
How to avoid mistakes
The only reliable benchmark remains certification issued by a recognized gemological laboratory (GIA, IGI, HRD), which precisely attests to the nature of the stone analyzed.
For a detailed comparison, read our article Lab-Grown Diamond vs. Moissanite: What Are the Differences?
Misconception #3: "A lab-grown diamond loses all its value"
It is true that the resale value of a lab-grown diamond is currently lower than that of an equivalent natural diamond, notably because production costs keep falling year after year. But presenting this as a "loss of value" of the jewelry is misleading.
A purchase for pleasure, not a financial investment
Whether natural or lab-grown, buying a piece of fine jewelry has never been a profitable financial investment at resale: retail margins, cutting and setting structurally reduce the resale value of any precious stone. A lab-grown diamond should therefore be chosen for what it is: a magnificent stone, physically durable over time, at a far more accessible price.
It is also useful to distinguish use value from resale value. In terms of use—wearing a brilliant, durable, personalized piece of jewelry—a lab-grown diamond has nothing to envy a natural diamond: it keeps its hardness and brilliance for life. Only on the resale market, where rarity plays a decisive role, does the gap widen. And rarity has never been what the vast majority of jewelry buyers are looking for; they prioritize emotion, aesthetics and accessibility above all.
To learn more about current market prices, see our complete 2026 guide to lab-grown diamond prices.
Misconception #4: "It will tarnish or lose its sparkle over time"
Diamond, whether natural or lab-grown, is the hardest material known to date (10 on the Mohs scale). This exceptional hardness means it does not scratch, does not wear and does not lose its brilliance with normal wear, unlike other, softer precious stones.
Care is still necessary
Like any piece of jewelry worn every day, a lab-grown diamond can accumulate dust and residue from lotion or soap, which temporarily dulls its sparkle. Regular cleaning in warm soapy water, combined with an annual check-up at the workshop, is enough to restore all of its original brilliance.
Discover all our recommendations in our article Caring for Lab-Grown Diamond Jewelry: Tips to Preserve Its Sparkle.
Misconception #5: "It's mass-produced, with no craftsmanship"
While the stone itself is born in a laboratory, the piece of jewelry that holds it requires the same artisanal savoir-faire as a natural diamond: selecting the stone according to the 4Cs (Carat, Color, Clarity, Cut), choosing an 18k gold or platinum setting, precision setting and final polishing. At Laveran Paris, every creation is handcrafted in our Parisian workshop in the historic diamond dealers' district.
Savoir-faire passed down, not automated
The process of creating the stone is industrial and scientific; the process of creating the jewelry remains deeply artisanal. From the selection of the diamond to delivery, several stages call on our artisans' expertise: choosing the setting best suited to the desired shape and style, precisely calibrating the setting to secure the stone, then the final polishing that reveals the full brilliance of the piece. It is this combination of cutting-edge technology for the stone and traditional savoir-faire for the jewelry that defines high jewelry in lab-grown diamonds today.
Misconception #6: "It's not really eco-friendly"
Lab-grown diamonds avoid mining, which is responsible for massive deforestation, soil pollution and sometimes dangerous working conditions. Their laboratory production, although energy-intensive, has an overall lower environmental footprint than traditional mining, and completely avoids the issue of conflict diamonds.
A documented ethical choice
This is not a marketing claim: it is a structural difference in the method of production, traceable from start to finish thanks to certification and the laser-inscribed number on each stone.
Misconception #7: "All lab-grown diamonds are the same"
As with a natural diamond, the quality of a lab-grown diamond varies greatly according to the 4Cs. A poorly cut diamond or one of lower color will be far less brilliant than a rigorously selected stone, even at the same carat weight. Quality also depends on the reliability of the supplier: an abnormally low price should always raise a red flag.
The key role of certification
A reputable lab-grown diamond always comes with a GIA, IGI or HRD certificate detailing all its characteristics and confirming its lab-grown origin.
To learn how to spot a quality diamond, read Lab-Grown Diamonds: How to Tell the Real from the Fake
Misconception #8: "It only comes in classic white"
On the contrary, lab-grown diamonds allow a creativity that nature cannot match: pink, blue, yellow or green diamonds, obtained by precisely controlling the elements introduced during growth (nitrogen for yellow, boron for blue, etc.). These hues, extremely rare and costly in their natural state, become accessible thanks to mastery of the CVD process.
Discover our world of color in Colored Lab-Grown Diamonds: Pink, Blue, Yellow, Green.
Misconception #9: "Lab-grown diamond jewelry looks cheap"
Nothing in the appearance, brilliance or presentation of a piece of jewelry gives away a diamond's lab-grown origin. Renowned luxury houses have in fact dedicated entire collections to this stone in recent years, proof that the lab-grown diamond has definitively earned its place in high jewelry. The more accessible price often even makes it possible to choose a larger carat weight, a more precious setting or a more elaborate design for the same budget.
Explore our creations in Lab-Grown Diamond Rings: The Best Choice for Ethical Elegance.
Misconception #10: "You can't buy online with confidence"
Buying a lab-grown diamond remotely is now perfectly secure, provided you choose a transparent jeweler. At Laveran Paris, each stone comes with its gemological certificate and a laser-inscribed number guaranteeing its traceability, and we offer video-call appointments to help you choose, wherever you are in France.
How to buy a lab-grown diamond with complete peace of mind
Beyond dispelling misconceptions, a few simple reflexes can secure your lab-grown diamond purchase, whatever piece you have in mind:
- Always insist on a certificate issued by a recognized independent laboratory (GIA, IGI or HRD), explicitly stating the stone's lab-grown origin.
- Check for a laser-inscribed number on the stone, guaranteeing its traceability throughout its life.
- Compare the 4Cs (Carat, Color, Clarity, Cut) rather than carat weight alone, as the quality of the cut has a considerable influence on perceived brilliance.
- Be wary of abnormally low prices, which often signal a lower-quality stone or a questionable origin.
- Choose a specialized jeweler who can advise you on the setting, mounting and care best suited to your piece.
In summary: why you can choose a lab-grown diamond with confidence
The lab-grown diamond has nothing left to prove: chemically identical to a natural diamond, certified by the same international laboratories, more accessible and more responsible, it meets the expectations of modern buyers without the slightest compromise on quality. The misconceptions that persist stem more from a lack of understanding of the process than from gemological reality.
At Laveran Paris, transparency is our first commitment: every stone is selected, certified and set in our Parisian workshop in the 9th arrondissement, so you can enjoy an exceptional piece of jewelry with complete peace of mind. Whether you are preparing a proposal, a gift or a piece for yourself, our team is here to help you choose a stone that lives up to your expectations, in our showrooms or by video call.
FAQ — Your questions about lab-grown diamonds
- Is a lab-grown diamond a real diamond? Yes. Its chemical composition, crystal structure and physical properties are strictly identical to those of a natural diamond. Only its origin differs.
- Why is a lab-grown diamond less expensive than a natural diamond? Because its production in a laboratory is faster and less costly than mining, which requires considerable resources and complex operating conditions.
- Does a lab-grown diamond lose its sparkle over time? No, it keeps its hardness and brilliance indefinitely thanks to its pure carbon composition. Regular cleaning simply removes the residue that can temporarily dull it.
- How can you verify that a lab-grown diamond is authentic? Always insist on a certificate issued by a recognized laboratory (GIA, IGI or HRD), as well as the certificate number laser-inscribed on the stone.
- Is a lab-grown diamond suitable for an engagement ring? Absolutely. It offers the same aesthetic qualities and the same durability as a natural diamond, for a far more accessible budget.
- What is the difference between an HPHT and a CVD lab-grown diamond? Both processes create authentic diamonds; they differ in their production method (pressure and temperature for HPHT, chemical vapor deposition for CVD), with aesthetic results that sometimes differ but comparable prices.
- Can you buy a lab-grown diamond without traveling? Yes. Laveran Paris offers video-call appointments to advise you remotely, in addition to our 10 showrooms in France.
