Are lab-grown diamonds worth it? Yes, if you want a larger or cleaner stone for your budget and you are buying a ring to wear, not an asset to resell. No, if resale value or geological rarity matters to you. Chemically, you are buying a diamond either way.
We offer both natural and lab-grown diamonds to our clients. What follows is the conversation we have across the table in our Seattle studio, written down: what you gain, what you give up, and how to tell which side of the line you are on.
If you would like to look at stones while you read, you can browse our lab-grown diamond engagement rings alongside this guide.
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is carbon crystallized in the same structure as a mined diamond. The Gemological Institute of America describes lab-grown diamonds as having essentially the same chemical, physical and optical properties as natural diamonds. That means it is not a simulant like cubic zirconia, and it is not a different mineral like moissanite.
What changes is the origin, and that is the part the law cares about. The FTC's guidance says a lab-grown stone should be described with a term such as "laboratory-grown" or "laboratory-created," so no one mistakes it for a mined diamond. That is also why every lab-grown piece we sell says so in its name.
How they are made: CVD vs HPHT
There are two ways to grow one. HPHT, short for high pressure and high temperature, recreates the crushing conditions deep in the earth inside a press. CVD, or chemical vapor deposition, breaks a carbon-rich gas such as methane into atoms and lets the carbon build up on a thin diamond seed. GIA puts a typical CVD growth run at three or four weeks.
Neither method makes a better stone by default. When you are comparing two diamonds, cut, color and clarity matter far more than how the crystal was grown. We go deeper into origin, rarity and environmental trade-offs in our guide to how lab-grown and natural diamonds compare.
Do lab-grown diamonds test as real diamonds?
They do. The handheld testers many jewelers keep on the counter measure how a stone conducts heat or electricity, and a lab-grown diamond behaves like a diamond because it is one. GIA notes that traditional gemological observation and old-style diamond detectors cannot tell the two apart.
Reliably separating them takes a gemological laboratory, or screening instruments built specifically for the job. So can a jeweler tell a lab-grown diamond from a natural one just by looking? No. With the right equipment and a grading report, yes, and that report is the reason certification matters as much as it does.
What you actually gain with a lab-grown stone
The practical case comes down to budget. For the same spend, a lab-grown center stone usually gets you more size, a higher color grade, or cleaner clarity than a natural stone would. Deciding which of those to put the money toward is a personal call, and there is no wrong one.
There are a few common ways to use that headroom:
- Move up in carat weight without moving up in budget.
- Choose an elongated shape, like an oval or a pear, that looks larger on the hand for its weight.
- Keep the stone a comfortable size and put the difference into the setting, or into a wedding band bought at the same time.
What you do not give up is durability. Because a lab-grown diamond shares a natural diamond's physical properties, it takes the same knocks, holds a prong setting the same way, and needs the same care. Nothing about wearing one every day is different.
If the grading vocabulary is new, our guide to the 4Cs explains carat, cut, clarity and color before you start comparing stones.
The downsides of lab-grown diamonds
Every honest answer to "is it worth it" has a second half, and it would not be much of a guide if we skipped it. Here is ours.
Resale value is the honest catch
Plan to keep a lab-grown diamond. The secondary market for them is thin, and many buyers who will make an offer on a used natural diamond will not make one on a lab-grown stone. Because they can be produced as demand requires, there is no scarcity holding their price up.
That matters if you think of an engagement ring partly as a store of value, or if you already expect to trade up in a few years. It matters a lot less if the ring is simply going on your hand for the next forty years.
Why some jewelers are wary of them
Search for long enough and you will find jewelers who dislike lab-grown diamonds. Some of their reasons are fair, and it is worth hearing them out. The market has shifted quickly, and a stone bought with resale in mind can disappoint. There is a disclosure risk too: a lab-grown stone that loses its paperwork can later be mistaken for natural, or a natural one for lab-grown.
None of that is a flaw in the diamond. It is a good reason to buy from someone who states origin plainly and hands you the report.
How lab-grown diamonds are certified
A lab-grown center stone should come with a grading report from an independent laboratory, most often IGI or GIA. The report confirms that the stone was grown in a lab and describes its quality. Many stones also carry a tiny laser inscription on the girdle, the thin outer edge of the stone, that matches the report number.
One thing to know is that the two labs now describe lab-grown stones differently. In June 2025, GIA announced it would stop applying the color and clarity scale it built for natural diamonds to lab-grown ones, moving instead to broader "premium" and "standard" descriptors. Its reasoning was that more than 95 percent of lab-grown diamonds entering the market fall into a very narrow range of color and clarity. IGI reports still carry familiar letter grades, such as E color and VS2 clarity.
Where one of our lab-grown diamond ring listings includes a report number, you can look that diamond up before you ever see it in person.
What to check on a lab-grown diamond report
A report is only useful if you read it closely, and that does not take long. Four things are worth a minute of your time:
- The origin statement. It should say plainly that the diamond is laboratory-grown.
- The report number. Match it to the listing, and to the girdle inscription if there is one. A jeweler can show you the inscription under magnification.
- Any note on treatment. GIA explains that many CVD diamonds come out of the growth chamber brown and are heat treated afterward to remove that color. Treatment is common and not a defect, but it should be disclosed.
- The grades or descriptor. Compare stones on the same lab's terms. An IGI letter grade and a GIA descriptor are not directly interchangeable.
Are lab-grown diamonds ethical?
They avoid mining, which removes the land disturbance and many of the supply-chain questions that come with it. That is a genuine advantage, and it is why many couples start their search here.
They are not impact-free. Growing a diamond takes a great deal of energy, and where that energy comes from varies from one producer to the next. We would rather tell you that plainly than overstate the case. If sourcing sits at the center of your decision, our guide to choosing an ethical engagement ring compares the options side by side. And if you are also weighing a different stone entirely, here is how moissanite compares.
Are lab-grown diamonds worth it for you?
After enough of these conversations, a pattern shows up, and it has less to do with the diamond than with what you want from the ring.
A lab-grown diamond is usually the right call if:
- You have a specific size or shape in mind and a firm budget.
- The ring is for wearing, and selling it is not part of the plan.
- You prefer a stone with no mining in its history.
A natural diamond is usually the better fit if:
- Rarity, and a stone formed over geological time, is part of what the ring means to you.
- You want to hold on to as much resale value as possible.
- You are pairing the new stone with an heirloom and want the two to share an origin.
If you are still torn, try one question. Imagine the stone had to be replaced tomorrow with an identical one. If the ring would still feel like your ring, the value lives in the design and the promise, and a lab-grown stone gives you more of both for the budget. If the answer turns on the stone's age or its journey out of the ground, that is a real preference, and a natural diamond is how you honor it.
Plenty of people land somewhere in between, and that is fine too. You can browse our full engagement ring collection with both options side by side, or design a custom ring around a lab-grown stone if nothing ready-made feels right. Custom engagement rings take eight to ten weeks.
Frequently asked questions
Do lab-grown diamonds hold their value?
Not the way natural diamonds can. The resale market for lab-grown stones is limited, so it makes sense to choose one because you love the ring rather than as an investment. The diamond itself will not wear out. It is the financial value, not the stone, that you should expect to be low.
Can a jeweler tell if a diamond is lab grown?
Not by eye, and not with a standard diamond tester. Separating lab-grown from natural requires laboratory screening equipment built for that purpose. That is why a lab-grown center stone should always come with a grading report, and often a matching laser inscription, confirming its origin.
Will a lab-grown diamond get cloudy or change color?
Not with everyday wear. A colorless lab-grown diamond has the same hardness as a natural diamond and wears the same way, so it should not cloud or fade. If a ring starts to look dull, the cause is almost always lotion, soap or everyday film on the stone, which a routine cleaning removes.
Do lab-grown diamonds come with a certificate?
A center stone should, and it is worth asking to see the report before you buy, not after. The reports you will see most often in the United States come from IGI and GIA. The report confirms the stone is lab grown and describes its quality in writing.
Is a lab-grown diamond the same as moissanite?
No. A lab-grown diamond is diamond: crystallized carbon. Moissanite is a different mineral, silicon carbide, with its own look, including more colorful flashes of light. Both are commonly made in a lab, and that shared starting point is usually where the confusion comes from.
Where to start
The fastest way to settle "is it worth it" for yourself is to see a lab-grown and a natural stone of similar size next to each other, in your budget, on your own hand.
Book a consultation at our Seattle studio or by video, and tell us roughly what you want to spend. We will put both options in front of you and let the stones make the argument.