Every diamond independently GCAL certified · D–E color · Ideal cut The super-ideal grades specialists charge a premium for — often around half the price of Blue Nile & Ritani.

Lab-Grown Diamonds

Curated lab-grown diamonds.

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Round 1.78 ct Ideal F VVS2 GCAL $460.38
Round 1.32 ct Ideal E VVS1 GCAL $489.14
Round 1.42 ct Ideal F VVS1 GCAL $485.37
Round 1.12 ct Ideal D VVS1 GCAL $302.23
Round 3.79 ct Ideal D VVS1 GCAL $2,688.38
Round 3.35 ct Ideal D VVS1 GCAL $1,889.96
Round 1.31 ct Ideal E VVS1 GCAL $485.44
Round 2.72 ct Ideal D VVS1 GCAL $1,283.36
Round 3.22 ct Ideal E VVS1 GCAL $1,625.78
Round 2.61 ct Ideal D VVS1 GCAL $1,224.18
Round 2.86 ct Ideal E VVS1 GCAL $1,215.68
Round 2.6 ct Ideal E VVS1 GCAL $941.46
Round 2.78 ct Ideal D VVS2 GCAL $1,176.64
Round 2.31 ct Ideal D VVS1 GCAL $879.65
Round 2.41 ct Ideal E IF GCAL $1,373.14
Round 2.88 ct Ideal F VVS1 GCAL $1,211.38
Round 2.36 ct Ideal E VVS2 GCAL $818.45
Round 2.16 ct Ideal F VVS1 GCAL $814.30
Round 2.02 ct Ideal F VVS1 GCAL $727.53
Round 2.09 ct Ideal E VVS2 GCAL $707.05
Round 2.06 ct Ideal E VVS2 GCAL $696.90
Round 2.28 ct Ideal D VVS2 GCAL $861.75
Round 2.19 ct Ideal E VVS2 GCAL $740.88
Round 2.19 ct Ideal D VVS1 GCAL $833.95
Round 2.06 ct Ideal E VVS1 GCAL $749.43
Round 1.77 ct Ideal E VVS1 GCAL $553.89
Round 1.86 ct Ideal E VVS2 GCAL $501.30
Round 1.91 ct Ideal F VVS1 GCAL $591.48
Round 1.52 ct Ideal F VVS2 GCAL $435.81
Round 1.72 ct Ideal E VVS1 GCAL $538.25
Round 1.54 ct Ideal F VVS2 GCAL $441.56
Round 1.43 ct Ideal E VVS1 GCAL $493.71
Round 1.12 ct Ideal E VVS1 GCAL $299.20
Round 1.34 ct Ideal E VVS2 GCAL $328.03
Round 1.03 ct Ideal F IF GCAL $599.59
Round 1.06 ct Ideal F VVS1 GCAL $280.26
Round 1.2 ct Ideal D VVS1 GCAL $449.19
Round 2.75 ct Ideal F VVS1 GCAL $1,284.70
Round 2.34 ct Ideal F VVS1 GCAL $842.78
Marquise 1.03 ct Ideal D VVS1 GCAL $439.06
Round 1.87 ct Ideal F VVS1 GCAL $579.09
Round 1.08 ct Ideal F VVS2 GCAL $245.43
Round 3.77 ct Ideal E IF GCAL $5,334.57
Round 2.52 ct Ideal F IF GCAL $1,363.66
Round 1.98 ct Ideal E VVS2 GCAL $536.81
Round 1.17 ct Ideal F VVS2 GCAL $265.90
Round 1.8 ct Ideal F VVS1 GCAL $557.41
Round 1.31 ct Ideal F IF GCAL $765.03
Round 2.06 ct Ideal F VVS1 GCAL $741.93
Round 2.94 ct Ideal E IF GCAL $2,075.90

Lab grown diamonds are real diamonds, created in a controlled lab environment using HPHT or CVD technology that mirrors how natural diamonds form. They are physically, chemically, and optically identical to mined diamonds — the only difference is origin. Every stone we sell is independently graded and certified by a recognized institution (typically IGI, GIA, or GCAL).

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How lab grown diamonds are created

Two technologies are used to grow diamonds:

CVD (Chemical Vapor Deposition). A diamond seed is placed in a carbon-rich chamber where atoms bond to the seed layer by layer. The slow, controlled process gives precise control over clarity and color, which is why CVD is favored for high-clarity stones with minimal inclusions.

HPHT (High Pressure, High Temperature). Extreme pressure and heat are applied to a carbon source around a seed crystal, replicating the conditions deep inside the earth. HPHT cycles run faster than CVD and can also be used to enhance color in CVD-grown stones.

Certification & transparency

Independent certification verifies a diamond's authenticity, quality, and grading. We pull stones with grading reports from IGI, GIA, and GCAL — the three institutions most trusted by the trade. Every report covers the four Cs (cut, carat, color, clarity), full measurements, proportions, fluorescence, and a unique report number that ties the certificate to the physical stone via laser inscription on the girdle. Click any diamond above to view its full grading report before you buy.

Where lab grown diamonds shine

Engagement rings. The most common use of loose lab diamonds — pair any stone you see above with one of our settings to design your ring. Browse settings in the ring builder.

Wedding bands & eternity rings. Lab diamonds are perfect for pavé, channel, and eternity bands — the small accent stones get the same hardness and brilliance as a solitaire center stone. See our wedding & anniversary rings.

Tennis bracelets & pendants. Lab diamonds set in a tennis bracelet, solitaire pendant, or halo pendant deliver consistent color and clarity across every stone — difficult to achieve with mined diamonds at the same price point. See tennis bracelets · See pendants.

Why buy lab grown diamonds online

Buying online means a wider selection of cuts, sizes, and grading combinations than any single brick-and-mortar can carry — and significantly better pricing because you skip the retail markup. We list every stone with its full specification and certificate up front, so you can compare apples-to-apples before you decide.

Frequently Asked Questions

What are lab grown diamonds?
Lab grown diamonds are real diamonds created in a laboratory under controlled conditions. Advanced technology replicates the heat, pressure, and carbon-bonding process that produces natural diamonds deep in the earth — the result is the same crystal structure, the same hardness, and the same optical behavior as a mined diamond.
How are lab grown diamonds made?
Two methods are used. HPHT (High Pressure, High Temperature) applies extreme pressure and heat to a carbon source around a diamond seed, mimicking conditions deep underground. CVD (Chemical Vapor Deposition) uses a carbon-rich gas chamber where carbon atoms bond to a seed crystal layer by layer. Both produce real diamonds; CVD typically yields cleaner stones, HPHT runs faster.
Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds have the same chemical, physical, and optical properties as mined diamonds. A gemologist with standard equipment cannot tell them apart from a mined diamond — only the laser inscription on the girdle distinguishes one from the other. Every lab grown diamond we sell is independently graded and certified, just like a mined diamond.
Are lab grown diamonds cheaper than mined diamonds?
Yes — typically 30 to 50 percent less than a mined diamond of the same carat, color, clarity, and cut. The savings come from skipping the mining supply chain, the long industry markup, and the marketing machine built around mined diamonds. The stone itself is identical at the molecular level.
Are lab made diamonds worth buying?
For most buyers, yes. You get a real, certified diamond at a meaningfully lower price, with a wider range of sizes and grades than the same budget would buy in a mined stone. Resale value is lower than for mined diamonds, so think of a lab diamond as a stone to be loved and worn rather than as an investment vehicle.
Are lab diamonds real or man-made?
Both descriptions are correct. They are real diamonds — same crystal structure and properties as mined — and they are man-made, in the sense that the conditions for their growth are produced in a laboratory rather than underground. "Real" and "man-made" are not opposites in this case.
Where can I buy lab grown diamonds online?
Right here. Every diamond on this page is in stock, certified, and ships insured to US locations. Filter by shape, carat, color, clarity, and cut to narrow down quickly — or sort by price to find the best value at your spec. Click any stone to see the full certificate before you buy.
Are lab grown diamonds more ethical than mined diamonds?
Lab grown diamonds skip the mining process entirely, which removes the conflict-diamond risk associated with traditional mining supply chains. They also have a significantly lower environmental footprint than open-pit or alluvial mining. For buyers who care about sourcing, lab grown is the cleanest option.
Which certification is best for lab grown diamonds?
The three labs most trusted by the trade are IGI, GIA, and GCAL. All three issue full grading reports covering the four Cs, full measurements, and a unique report number tied to the stone via laser inscription. Each has slightly different grading conventions, but for lab grown specifically there is no meaningful quality difference between them.
How often is your loose lab diamond inventory updated?
Our list of available stones is updated regularly. If you have a specific stone spec in mind that you don't see — a particular shape, carat range, color/clarity combination, or grading authority — contact us. We can do custom stone acquisition and source it for you directly from our manufacturer partners.
Can I use a lab diamond for an engagement ring?
Absolutely — this is the most common use of loose lab diamonds. Pick any stone above and pair it with one of our engagement ring settings. Browse settings in the ring builder to design your ring with the diamond you've selected.
Are lab diamonds suitable for wedding bands and fine jewelry?
Yes. Lab grown diamonds have the same Mohs-10 hardness as mined diamonds and are equally durable for everyday wear. They work just as well in pavé wedding bands, eternity rings, tennis bracelets, and pendant necklaces. We stock a full line of finished fine jewelry built with lab grown diamonds — see our wedding rings, tennis bracelets, and pendants.
Can loose lab diamonds be used to create custom jewelry?
Yes. The whole point of buying a stone loose is choosing your own setting. Use the ring builder to pair any diamond on this page with a finished setting in your preferred metal. For fully custom designs that aren't covered by our standard settings, contact us — we can arrange a custom build with our manufacturer.