Lab-Grown vs. Natural Diamonds
If you're deciding between a natural diamond and a lab-grown one, here's the short answer first: both are real diamonds. Neither is a substitute, an imitation, or a lesser stone. What differs is where the diamond came from — deep in the earth over billions of years, or grown in a laboratory over a matter of weeks. Everything else about the choice follows from that one difference, so let's go through it plainly.
What they share
A natural diamond and a lab-grown diamond are the same material: pure carbon arranged in the same crystal structure. Both measure 10 on the Mohs hardness scale — the top of the scale — and, given the same quality of cut, both give the same fire and brilliance. You cannot tell them apart by looking at them, and neither can a standard jeweler's loupe. Telling one from the other takes specialized laboratory equipment that tests how the crystal formed.
How a natural diamond is made
Natural diamonds formed deep below the earth's surface — more than a hundred miles down — where heat and pressure turned carbon into crystal over billions of years. Volcanic activity later carried them closer to the surface, where they are mined and sorted. From there, a natural diamond is cut and polished by hand and machine, the same way any diamond is finished.
How a lab-grown diamond is made
A lab-grown diamond starts as a tiny sliver of diamond, called a seed. In one method, the seed is put under the same kind of extreme heat and pressure that forms diamond underground, and carbon builds onto it until it becomes a rough diamond crystal. In the other method, a carbon-rich gas is heated until carbon atoms settle onto the seed layer by layer, growing the crystal over time. Either way, the rough stone that comes out is then cut and polished exactly the way a mined stone is.
Grading: the same standards, and the origin in writing
Independent gemological laboratories grade both kinds of diamond on the same 4Cs — cut, color, clarity, and carat weight — using the same scales. A stone's grading report also states its origin, natural or laboratory-grown, so there is no guessing about what you are looking at. Ask us about the grading report for any stone you're considering — we're glad to go through it with you, line by line. For more on how the grades themselves work, see our Diamond Guide.
Price and value — the honest version
For the same size and quality, a lab-grown diamond typically costs substantially less than a natural one. The reason is supply: a laboratory can produce more stones as demand grows, while natural diamonds are limited to what the earth made and miners can find. That lower price is why many shoppers choose lab-grown — it lets the budget reach a larger stone.
Natural diamonds carry something lab-grown stones don't: rarity, and a long resale history. They have historically held their value better over time. Lab-grown prices, on the other hand, have come down in recent years as production has grown and become more efficient — so a lab-grown stone is best bought for how it looks today rather than as a store of value. Neither fact makes one choice right and the other wrong. They are simply the trade-offs to weigh.
What about the environment?
Both kinds have a footprint. Mining moves earth and uses energy and water. Growing diamonds in a laboratory uses a great deal of electricity, and how clean that electricity is depends on where and how the stones are produced. You will find strong claims on both sides; the honest answer is that it varies by producer. If where a stone comes from matters to you, ask us about the specific diamond you're considering, and we'll tell you what we know about it.
Care and durability — identical
Because they are the same material, natural and lab-grown diamonds wear the same, last the same, and are cared for the same way. Everything in our Jewelry Care Guide applies to both.
How to choose
It usually comes down to a few questions. Is getting the largest stone your budget allows the priority — or does it matter to you that your diamond formed in the earth? Do you care about long-term value, or mostly about how the ring looks on the hand today? There is no wrong answer, only the one that fits you. We carry both kinds, and we're happy to lay them side by side in the store so you can compare with your own eyes before you decide.
A 2026 update: prices and resale
The figures in this section are from 2026 market reporting, not from our store. They describe the market as a whole, and they are dated because these numbers move.
The Knot's 2026 Real Weddings Study counted lab-grown stones as 61% of engagement-ring center stones. In that study, lab-grown rings averaged about $4,300 with a 2.0-carat center stone, against about $7,000 for a natural ring at 1.6 carats. BriteCo's appraisal figures for the first half of 2026 come at it from a different count: lab-grown stones made up 51% of newly appraised rings, with a median price of about $2,015 per carat for lab-grown against about $8,703 per carat for natural. A survey of couples and a set of appraisals count different things, so the two percentages are not expected to match exactly.
Lab-grown prices fell for years before 2026. BriteCo's median per-carat price for lab-grown fell 55% from 2019 to 2025. Wholesale figures compiled by analyst Edahn Golan, reported in 2026 trade roundups, show wholesale lab-grown prices down about 26% in 2025, then roughly 2% up in the third quarter of 2026. Read plainly, the fall has slowed. That describes one quarter; it is not a promise about where prices go next.
On resale, the record is uneven because the history is uneven. Natural diamonds have the longer resale track record behind them. Lab-grown stones cost far less up front, and their resale values are lower and still settling. Both facts belong in the decision, and neither one settles it on its own.
| Natural diamond | Lab-grown diamond | |
|---|---|---|
| Origin | Formed deep in the earth over billions of years, then mined | Grown in a laboratory over a matter of weeks |
| Chemical makeup | Carbon | Carbon — identical |
| Hardness | 10 on the Mohs scale | 10 on the Mohs scale |
| Typical price per carat, 2026 | Median about $8,703 per carat (BriteCo H1 2026 appraisal median) | Median about $2,015 per carat (BriteCo H1 2026 appraisal median) |
| Share of new rings, 2026 | Lab-grown: 61% of engagement-ring center stones (The Knot, 2026); 51% of newly appraised rings (BriteCo, H1 2026) | |
| Resale | The longer resale track record; values have historically held up better | Costs far less up front; resale values are lower and still settling |
Visit us at Roxy's Jewelry, Boynton Beach Mall, 801 N Congress Ave, Boynton Beach, FL 33426, or call the store at (561) 739-3339. When you're ready to think about the ring itself, read our Engagement Ring Guide, or browse our bridal collection.