Lab-grown and natural diamonds are the same material. Both are real diamonds, both are graded by the same labs, and nobody can tell them apart by eye. The differences are origin, price, and long-term value. If you want the biggest, cleanest stone for your money, buy lab-grown. If holding value or owning something that came out of the earth matters to you, buy natural.
Quick answer
- Lab-grown and natural diamonds are chemically and optically identical. Both are graded on the same 4Cs by IGI and GIA.
- Lab-grown costs roughly 70 to 85 percent less than natural at the same size and grade.
- Natural diamonds hold resale value better. Lab-grown prices have fallen as supply has grown.
- Choose lab-grown for everyday jewelry and for a bigger engagement ring on a set budget. Choose natural for heirloom pieces or when the origin matters to you.
- Avianne & Co. sells both and will put them side by side so you can decide for yourself.
What's the Difference Between Lab-Grown and Natural Diamonds?
Origin. That's it.
A natural diamond formed deep underground over roughly a billion years and was mined. A lab-grown diamond was grown from a diamond seed in a controlled environment over a matter of weeks. Both end up as crystallized carbon with the same hardness, the same way of bending light, and the same sparkle. The Federal Trade Commission requires both to be called diamonds.
A gemologist with a loupe cannot tell them apart. Separating them takes laboratory equipment that reads the crystal's growth pattern. Most certified lab diamonds also carry a tiny laser inscription on the edge with the report number and "Lab Grown," which is the practical way anyone checks.
Lab-Grown vs Natural: Side by Side
| Natural diamond | Lab-grown diamond | |
|---|---|---|
| What it is | Crystallized carbon | Crystallized carbon (identical) |
| Hardness (Mohs) | 10 | 10 |
| Sparkle and fire | Depends on cut | Depends on cut (identical) |
| Grading | GIA / IGI, same 4Cs | GIA / IGI, same 4Cs |
| Can a jeweler tell by eye? | No | No |
| Price at the same size and grade | Baseline | 70–85% less |
| Resale value | Holds | Low and falling |
| Supply | Finite | Growing |
| Best for | Heirlooms, value retention, buyers who want a mined stone | Everyday jewelry, bigger stones on a budget |
Do Lab-Grown Diamonds Look Different?
No. Put a 1 carat natural and a 1 carat lab-grown of the same cut and grade next to each other and you're looking at two identical stones. Same brightness, same flashes of color, same clarity under magnification. We do this at the counter every day and customers can't pick them apart.
What does change how a diamond looks is the cut grade, the color grade, and the clarity grade. Those matter equally for both. A poorly cut natural diamond looks worse than a well-cut lab diamond, every time.
Which One Is More Durable?
They're the same. Both are a 10 on the Mohs hardness scale, the hardest natural material there is. Both resist scratching from everything in daily life. Both can chip if struck hard on a sharp corner, which is why pear points and princess corners get protective prongs regardless of origin. Neither one clouds, fades, or changes over time.
What About Resale Value?
This is where natural wins, and we won't pretend otherwise. Natural diamonds are finite and have an established secondary market. They don't appreciate the way people sometimes think, but they hold a meaningful share of their value. Lab-grown prices have dropped steadily as supply has grown, and resale is thin. A lab diamond bought today will likely be worth less in a few years.
So the honest question is: are you buying this to wear, or buying it to hold? Almost everyone is buying it to wear. But if "this will be worth something someday" is part of the reason, natural is the right call.
How Do You Decide?
Three questions we ask at the counter.
- Is this an everyday piece? Studs, a pendant, a tennis bracelet, a band. If yes, lab-grown. These pieces are judged by how they look on you, and lab lets you buy the size you actually want.
- Is it an engagement ring, and what matters more: the size of the stone, or the stone holding value? Size, lab-grown. Value, natural. Both are good answers.
- Does it matter to you (or to her) that it came out of the ground? If yes, natural, and no further argument needed. That's a legitimate reason and we respect it.
What to Look For in Either One
- A grading report from GIA or IGI. On any significant stone, natural or lab. Our lab engagement rings come with IGI reports.
- Excellent cut. The one grade where spending more is always visible.
- G to H color, VS2 clarity. Eye-clean and white. Going higher costs more and looks the same.
- A solid gold setting. The stone is only half the piece. A good diamond in a flimsy setting is a bad ring.
Frequently Asked Questions
Are lab-grown diamonds real diamonds?
Yes. They're crystallized carbon with the same structure, hardness, and optical properties as natural diamonds, and the FTC requires them to be called diamonds.
Can you tell a lab-grown diamond from a natural one?
Not by eye or with a loupe. It takes laboratory equipment. Most certified lab diamonds carry a laser inscription on the edge that identifies them.
Which is better, lab-grown or natural?
Neither is better. Lab-grown gives you a bigger, cleaner stone for the money. Natural holds resale value and is finite. The right one depends on why you're buying.
Do lab-grown diamonds lose value?
Generally, yes. Prices have fallen as production has grown. Natural diamonds hold value better. Buy lab-grown to wear, not as an investment.
Is a lab-grown engagement ring a good idea?
For most couples, yes. It's a real diamond, and the budget goes much further. If value retention matters to you, choose natural.
See Them Side by Side
The fastest way to decide is to look. Visit us on 47th Street and we'll put a natural and a lab-grown diamond of the same size next to each other. Or browse lab diamond rings and the full engagement ring collection online.
