Stones
What Lab Grown Diamonds Actually Cost
The price has been falling for years and shows no sign of stopping. That is excellent news if you are buying and bad news if you are selling.
#ad — we earn a commission on qualifying Amazon purchases at no extra cost to you. How this site is funded. Prices are live and shown as of September 7, 2026.
The short answer
Lab-grown diamonds cost a fraction of mined stones with the same grading, and the gap has widened as production capacity grew. We do not quote a fixed figure here because the market moves too fast for a typed number to stay honest - the live prices in the table above are the real answer.
What to buy
| # | Pick | Material | Score | Price |
|---|---|---|---|---|
| 1 |  Belacqua 1/2 Carat Lab-Grown Diamond Stud Earrings, 14K Yellow Gold Half a carat of lab-grown in solid 14K - the tier where the pricing story pays off Top pick | Lab-grown diamonds set in solid 14K yellow gold. Lab-grown diamonds are real diamonds - same carbon, same crystal structure, same Mohs 10 hardness. The gold is solid, not plated or filled.Best value lab-grown | 9.2/10 | |
| 2 |  Carbon Atelier 1 Carat Lab-Grown Diamond Pendant, 14K Gold A full carat in solid gold, at a price a mined stone could not approach | One carat lab-grown diamond in solid 14K gold. Real diamond, solid gold, no coatings anywhere.Biggest stone for the money | 9.0/10 | |
| 3 |  Moissanite Stud Earrings, 2.0ct D Color Equivalent, GRA Certified The step down in price and up in fire, if lab-grown is still above budget | Moissanite (silicon carbide) in 925 sterling silver with an 18K white gold plated finish, sold with a GRA report. Moissanite is its own mineral, not a diamond simulant pretending otherwise.Best cheaper alternative | 8.4/10 |
Why we will not print a price per carat
Every guide that quotes a fixed dollar-per-carat figure is out of date within months, and lab-grown has moved faster than almost any other jewelry category in the last decade. A number typed into this page in September would be misleading by the spring, and a misleading number is worse than no number.
What we can give you is the shape of the market and the live prices on the specific pieces above, pulled from Amazon and stamped with the date they were checked.
Why the price keeps falling
Lab-grown diamonds are manufactured, primarily by chemical vapor deposition or high-pressure high-temperature methods. Manufacturing has a cost curve: as capacity is added and processes improve, unit costs fall. That is what has happened, at scale, and it is a normal industrial dynamic rather than anything unusual to diamonds.
Mined diamonds have a different economics - supply is constrained by geology and by the companies controlling it - which is why the two price curves have separated so far.
What that means if you are buying
| Your goal | Lab grown | Mined |
|---|---|---|
| Biggest stone for the budget | Lab grown, clearly | No |
| Better setting for the same money | Lab grown | No |
| Something to wear for decades | Identical - Mohs 10 either way | Identical |
| Something to resell | No - thin market, falling prices | Better, still below retail |
| Something to insure | Yes, at replacement cost | Yes |
| Something to hand down | Fine - it is a real diamond | Fine |
Where the savings are best spent
Three places, in order of how much difference they make:
- The setting metal. Solid gold or platinum prongs hold stones. Sterling prongs bend, and a lost stone costs far more than the setting saved. This is the single best use of lab-grown savings.
- Cut quality. Cut affects how a stone looks more than carat does. A well-cut smaller stone outperforms a poorly-cut larger one in every light.
- Not spending it. Genuinely. If lab-grown gets you the ring you wanted for half of what you budgeted, the other half does not have to become more stone.
Grading and reports
Lab-grown diamonds are graded on the same 4Cs as mined stones, by the same laboratories. A report from a recognized lab tells you what you are buying. Reports from unfamiliar labs vary in rigour, and a report is identification rather than valuation in any case.
For a small stone in a marketplace listing, a report often does not exist at all - which is fine at that price point, provided the listing is honest that the stone is lab-grown and you are not paying mined-stone money for it.
Every pick in detail
What each one is actually made of, how long it realistically lasts in that material, who it is for and who should skip it.
1 · Best value lab-grown
Belacqua 1/2 Carat Lab-Grown Diamond Stud Earrings, 14K Yellow Gold
The first item here where nothing is a coating and nothing clouds. That is what the price is buying.
- What it is
- Lab-grown diamonds set in solid 14K yellow gold. Lab-grown diamonds are real diamonds - same carbon, same crystal structure, same Mohs 10 hardness. The gold is solid, not plated or filled.
- Realistic lifespan
- Effectively permanent. Mohs 10 stones in solid 14K gold is the only combination on this site with no wear-limited component at all.
- 0.5ct total
- Mohs 10
- solid 14K gold
What works
- Solid gold settings - no plating to wear off, ever
- Real diamonds at a fraction of mined-diamond pricing
- Nothing on this product has a countdown attached to it
What does not
- Lab-grown diamond resale is thin and prices have fallen steadily
- The most expensive earrings on the site by a wide margin
Skip it if: you are buying for resale or as a store of value. Lab-grown prices have been falling; buy these to wear for thirty years, which they will.
#ad how we make money · price as of September 7, 2026
Best for buying earrings once. Score 9.2/10 from published specifications.
2 · Biggest stone for the money
Carbon Atelier 1 Carat Lab-Grown Diamond Pendant, 14K Gold
A full carat of real diamond in solid gold. It is the most expensive thing we link to and the only one with genuinely nothing to replace.
- What it is
- One carat lab-grown diamond in solid 14K gold. Real diamond, solid gold, no coatings anywhere.
- Realistic lifespan
- Effectively permanent for both the stone and the setting.
- 1.0ct
- Mohs 10
- solid 14K gold
What works
- Solid gold chain and setting - nothing to plate, nothing to wear
- A carat of real diamond at a price mined stones cannot approach
What does not
- Lab-grown resale value is weak and has been declining
- A single large stone concentrates all the value in one prong-held place
Skip it if: you are buying an asset. If the money is meant to hold value, this is not the instrument - buy it because you want to wear a carat of diamond.
#ad how we make money · price as of September 7, 2026
Best for a milestone piece bought once. Score 9.0/10 from published specifications.
3 · Best cheaper alternative
Moissanite Stud Earrings, 2.0ct D Color Equivalent, GRA Certified
The stone that solves the CZ problem. Hard enough to stay bright, priced far below a diamond, and honest about being moissanite.
- What it is
- Moissanite (silicon carbide) in 925 sterling silver with an 18K white gold plated finish, sold with a GRA report. Moissanite is its own mineral, not a diamond simulant pretending otherwise.
- Realistic lifespan
- Moissanite is 9.25 on the Mohs hardness scale against diamond's 10 and CZ's 8-8.5. In practice it holds its polish for decades where CZ clouds in a few years. The plated finish on the setting is the part that wears first.
- 2.0ct
- Mohs 9.25
- GRA report
What works
- Genuinely durable - moissanite does not go cloudy the way CZ does
- Higher refractive index than diamond, so it throws more colored fire
- Sold with a GRA report, which at least documents what the stone is
What does not
- The extra fire reads as 'not a diamond' to anyone who looks closely - some people want that, some do not
- GRA reports are not GIA reports; treat them as identification, not valuation
- The setting's white finish is plated and will wear
Skip it if: you want something with resale value. Moissanite's secondary market is thin. Buy it to wear, not to sell.
#ad how we make money · price as of September 7, 2026
Best for someone who wants stones that still sparkle in ten years. Score 8.4/10 from published specifications.
Common questions
How much cheaper are lab grown diamonds?
Substantially, and the gap has widened over time. We deliberately do not print a percentage, because the number moves fast enough that anything typed here would be stale within months. Compare live listings for the same specs.
Will lab grown diamonds keep getting cheaper?
We cannot forecast that and will not pretend to. What is observable is that prices have fallen as capacity has grown, which is the normal path for a manufactured good.
Can you insure a lab grown diamond?
Yes, at replacement cost like any other jewelry. Because replacement cost is lower, so is the premium - a small practical advantage nobody mentions.
Is a cheap lab grown diamond lower quality?
Not necessarily. Price varies with the 4Cs exactly as it does for mined stones. A cheap lab-grown stone is usually smaller, more included or less well cut - the same reasons a mined stone would be cheap.
Sources
Every specification and figure on this page traces to one of these. Where a source does not publish a number, the page says so rather than estimating one.
- 16 CFR 23.12 - Definition and misuse of the word 'diamond' — Sets when a laboratory-created diamond may be called a diamond and what disclosure is required.
- 16 CFR 23.25 - Misuse of 'ruby', 'sapphire', 'birthstone', 'gem', etc. — Governs how created and imitation stones must be described, including birthstones.
- GIA Gem Encyclopedia and gemological education — Reference source for gemstone hardness, species and treatment terminology.
Read next
- Lab grown vs natural diamonds
What is actually the same and what is not.
- The 4Cs explained
What you are paying for, in order of impact.
- Best jewelry under $500
Where lab-grown in solid gold becomes reachable.
- Moissanite vs lab diamond
The cheaper hard-stone option, compared honestly.