Lab grown diamonds have moved from niche curiosity to mainstream choice, and the single question shoppers ask most is simple: are they actually cheaper? The short answer is yes, and by a wide margin. But the more useful question is why they cost less, how much you really save, and whether that saving comes with any hidden compromise. This guide breaks down the real numbers so you can decide with confidence.
A lab grown diamond typically costs 60–85% less than a mined diamond of identical 4Cs grading. A 1.00ct F/VS1, Excellent-cut round lab grown diamond set in platinum runs roughly $1,900–$2,700 in the U.S. today; the same specification mined stone costs about $7,000–$9,500. The two are chemically and optically identical — same Mohs 10 hardness, same fire and brilliance, same GIA or IGI certification — so paying less buys you no loss of beauty or durability.
Why lab grown diamonds cost less
The price gap has nothing to do with quality and everything to do with supply chain. A mined diamond passes through exploration, extraction, rough sorting, cutting, and multiple trading tiers before it reaches a store, and each layer adds cost and margin. A lab grown diamond is created in a matter of weeks in a controlled facility using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD), then cut and certified through the same process as any mined stone. Fewer intermediaries and a shorter, more predictable production cycle mean a dramatically lower final price.
Because the two are the same material, you are not paying for a lesser product. You can see the full side-by-side breakdown on our natural vs. lab grown price comparison, and learn how the growing methods differ in our lab grown diamond guide.
How much do you actually save?
Savings scale with carat weight, because mined-diamond prices rise steeply as stones get larger while lab grown prices climb far more gently. The table below shows typical U.S. retail ranges for well-cut, eye-clean stones in a simple setting. Figures move with the market, so treat them as a guide rather than a fixed quote.
Approximate U.S. pricing by carat (F–G color, VS clarity, Excellent cut)
0.50ct: lab grown around $600–$950 versus mined $1,800–$2,600. 1.00ct: lab grown around $1,900–$2,700 versus mined $7,000–$9,500. 1.50ct: lab grown around $2,800–$4,200 versus mined $12,000–$16,000. 2.00ct: lab grown around $4,500–$6,800 versus mined $22,000–$32,000. The larger the stone, the larger the dollar saving — which is why lab grown is especially popular for statement engagement rings.
Does a lower price mean lower quality?
No. Lab grown and mined diamonds are both pure crystallized carbon with an identical atomic structure, so they share the same 10 on the Mohs hardness scale and the same refractive properties that create sparkle. A trained gemologist cannot tell them apart by eye; distinguishing them requires specialized equipment. If you want the science, our explainer on whether lab grown diamonds are chemically the same as natural diamonds covers it in detail.
Every serious lab grown diamond should arrive with an independent grading report from GIA or IGI, assessed against the same 4Cs — cut, color, clarity, and carat — used for mined stones. Understanding those four factors is the best way to compare value; our diamond education hub walks through each one.
Do lab grown diamonds hold their value?
This is the one honest trade-off. Because lab grown diamonds can be produced consistently, their resale value is lower than that of mined diamonds, which have historically retained more of their price on the secondary market. For most buyers this is academic — jewelry is rarely bought as an investment, and even mined diamonds typically resell well below retail. The practical upside is clear: your budget buys a visibly larger, higher-graded stone today. You can put the difference toward a better setting, matching wedding bands, or a pair of diamond earrings.
Getting the most from your budget
Because you are saving so much on the stone, spend strategically. Prioritize cut grade above all else — it is what makes a diamond sparkle. Choose a color grade of G or H, which faces up white in most settings, and a clarity of VS1 or VS2, which is eye-clean without paying for flawlessness you cannot see. Reallocating the savings this way often lets you move up a full carat compared with an equivalent mined-diamond budget.
Frequently asked questions
Are lab grown diamonds real diamonds?
Yes. They are genuine diamonds with the same chemical composition and physical properties as mined diamonds. They are not simulants such as cubic zirconia or moissanite.
Will a jeweler be able to tell it is lab grown?
Not by eye. Identification requires specialized instruments, and reputable lab grown stones are laser-inscribed with their certificate number for transparency.
Is a lab grown diamond a good choice for an engagement ring?
For most couples, yes. You get a larger, higher-quality stone for the same spend, backed by GIA or IGI certification. Browse styles in our engagement ring collection.
At Rêve Diamonds, every lab grown diamond is independently certified and hand-selected, so you can enjoy the full saving with complete confidence in what you are buying.
