How much does a 0.75-carat lab-grown diamond cost?
In our October 26, 2026 price check, a loose 0.75-carat lab-grown diamond cost $261 to $357 among the sellers with matching listings. Ritani was $261; With Clarity was $357. These are sampled prices for closely matched round diamonds, before a setting and tax.
We searched for round diamonds from 0.70 to 0.80 carats, with E color, VVS2 clarity, and a high cut grade. The price is for the diamond alone; a ring setting, earrings, or pendant will increase the total.
Read our Ritani review See 0.75-carat diamonds at Ritani
0.75-carat lab-grown diamond prices in 2026
These jewelers had matching round diamonds in our latest inventory check. Compare the same grades before choosing on price. Every diamond was 0.70–0.80 carats, E color, VVS2 clarity and IGI graded. Ritani rounds had its Ideal label; other sellers’ rounds had Ideal or Excellent labels.
| Jeweler | Price | Sample | Browse |
|---|---|---|---|
| Ritani | $261 | Middle price of 5 lower-priced matches22 diamonds matched these grades | See at Ritani ↗ |
| With Clarity | $357 | Middle price of 5 lower-priced matches20 diamonds matched these grades | See at With Clarity ↗ |
Prices are in US dollars for the loose diamond, before a setting and tax. Each jeweler contributes one result to the seller comparison.
See the September 2026 seller comparison
“Typical” is the middle of the seller benchmark prices above. Each seller counts once, so a jeweler with a much larger inventory cannot pull the figure down simply by listing more diamonds.
| Seller and sample | Price | Difference |
|---|---|---|
| RitaniMiddle price of five lower-priced diamonds | $197 | Lowest in our test |
| With Clarity0.75 ct public D/VVS2 Excellent-cut result | $435 | 120.8% more |
| Brilliant EarthMiddle price of five lower-priced comparable diamonds; grading lab not provided | $470 | 138.6% more |
| Blue Nile0.76 ct current E/VVS2 Ideal-cut result | $488 | 147.7% more |
Across the four sellers, the sample column tells you whether the price comes from one listing or the middle of five comparable listings. Grown Brilliance's loose-diamond search begins at one carat, so it is not included in this three-quarter-carat comparison.
What does a 0.75-carat diamond look like?
A well-proportioned 0.75-carat round diamond is usually about 5.8 to 5.9 millimeters wide. It is visibly larger than half a carat but still comfortable in a low, practical setting. On a slim band, it can give an engagement ring plenty of presence without feeling oversized.
Shape changes the look. An oval, pear, or marquise often covers more of the finger from top to bottom, while an emerald cut has a broader, quieter pattern of light. A halo can add more visible width; a bezel makes the outline stronger and offers extra protection.
How to get the best value
The guide recommended prioritizing cut, then color and clarity, and finally exact carat weight. That remains sensible. For a round diamond, start with Ideal or Excellent cut and check the video for even brightness and contrast.
You probably do not need E/VVS2. G–H color and eye-clean VS1–VS2 clarity are often better-value targets. Also search from about 0.70 carats rather than requiring exactly 0.75. A well-cut 0.71-carat stone can look better than a heavier diamond with weak proportions.
Compare the millimeter measurements and total ring price. The diamond may be inexpensive while a pavé, halo, or designer setting adds far more to the final bill.
See our lab-grown diamond buying guide
Three-quarter-carat round versus fancy-shaped diamonds
Fancy shapes can offer excellent value. Elongated ovals, pears, marquises, and emerald cuts often look larger than a three-quarter-carat round diamond. Some shapes cost less, but the price changes with demand, proportions, and how efficiently each stone was cut.
For our September shape comparison, we used the five lowest qualifying Ritani API results for each of ten shapes. Every diamond was 0.70 to 0.80 carats, E color, VVS2 clarity, and IGI graded. Round diamonds had Ritani's Ideal label; the fancy shapes had Very Good or better cut labels. In total, 825 Ritani diamonds met those rules.
We compared 8 shapes at Ritani to keep seller markups out of the comparison. Every diamond was 0.70–0.80 carats, E color, VVS2 clarity and IGI graded. Round diamonds had Ritani’s Ideal label; fancy shapes had Very Good or better labels.
| Shape | Price | Sample |
|---|---|---|
| Pear | $222 | Middle price of 5 lower-priced matches11 diamonds matched these grades |
| Oval | $234 | Middle price of 5 lower-priced matches39 diamonds matched these grades |
| Emerald | $258 | Middle price of 5 lower-priced matches6 diamonds matched these grades |
| Round | $261 | Middle price of 5 lower-priced matches22 diamonds matched these grades |
| Heart | $276 | Middle price of 5 lower-priced matches10 diamonds matched these grades |
| Radiant | $292 | Middle price of 5 lower-priced matches5 diamonds matched these grades |
| Cushion | $328 | Middle price of 5 lower-priced matches8 diamonds matched these grades |
| Princess | $446 | Middle price of 3 lower-priced matches3 diamonds matched these grades |
Prices are in US dollars for the loose diamond, before a setting and tax. Each jeweler contributes one result to the seller comparison.
See the September 2026 shape comparison
| Shape | Middle price | Sample range | Recorded cut label |
|---|---|---|---|
| Round | $197 | $190–$199 | Ideal |
| Oval | $221 | $218–$239 | Very Good |
| Emerald | $205 | $201–$230 | Very Good |
| Pear | $190 | $183–$192 | Very Good |
| Marquise | $227 | $217–$228 | Very Good |
| Radiant | $220 | $211–$223 | Very Good |
| Cushion | $229 | $221–$259 | Very Good |
| Princess | $221 | $216–$234 | Very Good |
| Asscher | $360 | $279–$389 | Very Good |
| Heart | $253 | $238–$269 | Very Good |
In the September comparison, Pear was the least expensive shape in this sample, with a middle price of $190 among its five lowest qualifying listings. Asscher was highest at $360. That does not mean Asscher cuts are always the most expensive; it reflects the qualifying inventory available on the check date.
For ovals, pears, and marquises, inspect the center for a dark bow tie. For emerald and Asscher cuts, look for attractive, even steps rather than distracting dark zones or a see-through center.
Current three-quarter-carat examples
round · IGI
$190
0.73 ct · E · VVS2 · Ideal
Lowest qualifying round result in the API capture.
Visit Ritani
oval · IGI
$218
0.76 ct · E · VVS2 · Very Good
Lowest qualifying oval result in the API capture.
Visit Ritani
emerald · IGI
$201
0.80 ct · E · VVS2 · Very Good
Lowest qualifying emerald result in the API capture.
Visit Ritani
pear · IGI
$183
0.73 ct · E · VVS2 · Very Good
Lowest qualifying pear result in the API capture.
Visit RitaniRitani's catalog images show each diamond shape, not the exact stones in our sample. Listings and prices can change after our check, so confirm the current diamond on the seller's site.
Good ring styles for a 0.75-carat diamond
A three-quarter-carat diamond is versatile enough for most settings. A slim solitaire keeps the diamond prominent; pavé adds sparkle without changing its outline; a halo makes it look larger; and a bezel is a useful everyday option for someone active or hard on jewelry.
Six-prong solitaire from Ritani
The white-metal James Allen solitaire pictured at the top is another restrained design. James Allen jewelry is now a collection at Blue Nile.
Where should you buy?
Prices can vary widely within the same carat range. Compare the actual diamond, grading report and complete ring price—not only the headline price—before choosing a seller.
| Jeweler | Best for | Our rating | Shop |
|---|---|---|---|
| Ritani | Prices, loose-diamond selection and value | 4.7/5 | See at Ritani |
| Blue Nile | A polished all-round shopping experience | 4.6/5 | See at Blue Nile |
| Brilliant Earth | Premium settings, showrooms and guided shopping | 4.5/5 | See at Brilliant Earth |
Ritani: best for price and selection
Ritani had the lowest current benchmark and 825 diamonds met the full rules across ten shapes. Its search tools and transparent cost breakdown make it the best starting point for value.
Blue Nile: best all-round alternative
Blue Nile is worth checking if you prefer its ring builder, inspection tools, support, showrooms, or the designs in its James Allen collection.
Brilliant Earth: best for showrooms and labeled sustainability collections
Brilliant Earth was more expensive in this test, but its showroom network, settings, and specifically labeled Renewable, Capture, and Sustainably Rated options can justify a comparison for some buyers.
Is a 0.75-carat lab-grown diamond worth it?
It is a strong middle ground: noticeably larger than half a carat, more restrained than a one-carat stone, and inexpensive relative to the setting. A good cut matters more than reaching exactly 0.75 on the certificate.
Lab-grown diamonds are real diamonds, but resale prices are weak. Buy one to wear, not as an investment. Sustainability also depends on how and where the diamond and jewelry were made, so prefer specific product-level information over broad green claims.
How prices have changed
Our earlier six-seller research found round 0.75-carat lab-grown diamonds from $443 to $1,092. Those stones used I–J color and VS1–VS2 clarity and the table reported seller ranges. The current benchmark uses E/VVS2 and a narrower method, so the comparison is directional rather than a formal index.
September 2026 price comparison
In our September 2026 comparison, a loose three-quarter-carat lab-grown diamond cost $197 to $488 across four sellers. Ritani was the least expensive and Blue Nile the most expensive. The seller-balanced typical price was about $453.
Ritani was the clear price leader. Its five lowest qualifying round diamonds had a middle price of $197, with individual prices from $190 to $199.
Earlier round-diamond comparison
$443–$1,092
6 sellers · Round diamonds near 0.75 carats, I–J color, VS1–VS2 clarity, and Excellent or Ideal cut; seller ranges rather than one shared aggregation.
September 2026 test
$197–$488
4 sellers · Round diamonds from 0.70 to 0.80 carats, E color, VVS2 clarity, and a high cut grade; IGI grading where the source exposed it.
Earlier studies used I–J color and VS1–VS2 clarity. The 2026 comparisons use E color and VVS2 clarity; each table lists its own cut and grading rules.
See our earlier round-diamond price comparison
Round brilliant lab-grown diamonds close to the target weight; Excellent (GIA) or Ideal (IGI) cut, I–J color and VS1–VS2 clarity.
Brilliant Earth and James Allen used higher minimum grades in this comparison.
| Jeweler | Recorded price range |
|---|---|
| Ritani | $443–$447 |
| Grown Brilliance | $515–$545 |
| Clean Origin | $566–$765 |
| With Clarity | $616–$1,092 |
| Brilliant Earth | $730–$1,040 |
| James Allen | $720–$1,080 |
These are prices from our earlier seller comparison, not current offers. The Brilliant Earth range included its seller-labeled sustainable collection. James Allen is now a collection at Blue Nile.
See our earlier fancy-shape comparison
Starting prices near 0.75 carats, I–J color, VS1–VS2 clarity, and Very Good or better seller-reported cut.
| Seller | oval | emerald | pear | princess | radiant | cushion | heart |
|---|---|---|---|---|---|---|---|
| Ritani | $294 | $150 | $220 | $321 | $352 | $449 | $668 |
| Clean Origin | $485 | $417 | $302 | $519 | $500 | — | — |
| With Clarity | $658 | $541 | — | $564 | $448 | $569 | — |
| Grown Brilliance | $345 | $325 | $385 | $330 | $350 | $345 | $705 |
| Brilliant Earth | $760 | $640 | $640 | $680 | $640 | $780 | $680 |
| James Allen (historical) | $680 | $480 | $620 | $790 | $750 | $820 | $1,250 |
Our verdict
A close 0.75-carat lab-grown diamond cost $197 to $488 in our current test, with a seller-balanced typical price of about $453. Ritani is the first place we would look. Choose the cut and visible dimensions before chasing an exact milestone, then compare the complete jewelry price and return terms.
How we researched 0.75-carat prices
We checked US listings on September 3, 2026. The target was 0.70–0.80 carats, E color, VVS2 clarity, and a high cut grade. Ritani's complete filtered API capture produced 825 qualifying offers across ten shapes. Brilliant Earth's feed supplied 80 close high-cut round results but does not expose the grading lab. Blue Nile contributed a current E/VVS2 result; With Clarity's closest public match was D/VVS2, one color grade above the target. Grown Brilliance's current public loose-diamond search begins at 1.00 carat, so it was not added as an unlike comparison.
The current shape table compares shapes within Ritani, so different seller markups do not distort the result.
These dated tables show the cut labels recorded in that study. Check the current diamond listing when choosing a stone.
To work out a typical price across sellers, we sort their benchmark prices from lowest to highest and take the middle value, or the average of the middle two. Each seller contributes one benchmark, regardless of inventory size.
Ritani's complete filtered API capture produced 825 qualifying diamonds across ten shapes. Brilliant Earth's feed supplied 80 close high-cut round results, but it does not expose the grading lab. Blue Nile contributed a current E/VVS2 result. With Clarity's closest public match was D/VVS2, one color grade above our target, and the row says so. The current shape table uses one seller so that retailer markup does not obscure differences in available shapes.
The earlier seller and fancy-shape tables show the prices and grades we recorded at that time.
Compare other carat weights
- 0.5-carat lab-grown diamond prices
- 1-carat lab-grown diamond prices
- 1.5-carat lab-grown diamond prices
- 2-carat lab-grown diamond prices
- 3-carat lab-grown diamond prices
- 4-carat lab-grown diamond prices
- 5-carat lab-grown diamond prices
- 6-carat lab-grown diamond prices
Update history
This guide was first published in March 2023 and updated as prices changed. The September 2026 update adds seller prices, a ten-shape price comparison, jewelry examples, and advice on size, settings and where to shop.
Questions and experiences
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