3 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 3 carat cushion lab grown diamonds usually range from $431 to $12,620, with an average price of $2,415.In the last month, prices for these diamonds are down 7%.Compare 6,650 verified listings across 11 retailers tracked by CaratRadar.
3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 6,650 verified 3-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $431 to $12,620, with an average asking price of $2,415 and a median of $1,654.
The price spread of $12,189 (96.6% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
6,650 diamonds tracked in this segment
Price range: $431 to $12,620
Average price: $2,415
Median price: $1,654
Available across 11 retailers
Savings potential: up to 96.6%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
6,650
$431
$2,415
$1,654
$12,620
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 41.9%IGI | 3.03ct | Cushion | H | VS2 | Very Good
From $447
Compare at $770
Save 77.8%IGI | 3.1ct | Cushion | I | VS2 | Ideal
From $458
Compare at $2,060
Save 61%IGI | 3.03ct | Cushion | F | SI1 | Very Good
From $475
Compare at $1,218
Save 23.4%IGI | 3.09ct | Cushion | H | VS2 | Very Good
From $477
Compare at $623
Save 61.6%IGI | 3.08ct | Cushion | F | SI1 | Very Good
From $483
Compare at $1,258
Save 79.5%IGI | 3.08ct | Cushion | H | VS2 | Very Good
From $490
Compare at $2,390
Save 42.1%IGI | 3ct | Cushion | H | VVS2 | Excellent
From $498
Compare at $860
Save 79.3%IGI | 3.1ct | Cushion | H | VS2 | Very Good
From $500
Compare at $2,410
Save 79.9%IGI | 3.02ct | Cushion | H | VS2 | Very Good
From $500
Compare at $2,490
Save 64.6%IGI | 3.01ct | Cushion | G | SI1 | Ideal
From $502
Compare at $1,417
Save 22.8%IGI | 3.03ct | Cushion | F | SI1 | Ideal
From $505
Compare at $654
Save 70%IGI | 3.01ct | Cushion | H | VS1 | Ideal
From $516
Compare at $1,721
Save 57.2%IGI | 3.02ct | Cushion | H | VS1 | Very Good
From $522
Compare at $1,219
Save 60.6%IGI | 3.07ct | Cushion | G | VS1 | Very Good
From $526
Compare at $1,336
Save 60.7%IGI | 3.08ct | Cushion | G | VS1 | Ideal
From $528
Compare at $1,344
Save 23.1%IGI | 3.03ct | Cushion | G | VS2 | Very Good
From $530
Compare at $689
Save 22.3%IGI | 3ct | Cushion | G | VS1 | Very Good
From $531
Compare at $683
Save 57.2%IGI | 3.01ct | Cushion | H | VVS2 | Very Good
From $533
Compare at $1,246
Save 22.2%IGI | 3.01ct | Cushion | G | VS1 | Very Good
From $533
Compare at $685
Save 23.2%IGI | 3.01ct | Cushion | G | VS1 | Very Good
From $533
Compare at $694
Save 22.2%IGI | 3.01ct | Cushion | G | VS1 | Very Good
From $533
Compare at $685
Save 31.5%IGI | 3.06ct | Cushion | G | VS1 | Very Good
From $534
Compare at $780
Save 39.9%IGI | 3.02ct | Cushion | G | VS1 | Very Good
From $535
Compare at $891
Save 39.9%IGI | 3.02ct | Cushion | G | VS1 | Very Good
From $535
Compare at $891
Save 23%IGI | 3.02ct | Cushion | G | VS1 | Very Good
From $535
Compare at $695
Save 23%IGI | 3.02ct | Cushion | G | VS1 | Very Good
From $535
Compare at $695
Save 32.2%IGI | 3.07ct | Cushion | G | VS2 | Very Good
From $536
Compare at $791
Save 22.1%IGI | 3.03ct | Cushion | G | VS1 | Ideal
From $537
Compare at $689
Save 23.1%IGI | 3.03ct | Cushion | G | VS2 | Very Good
From $537
Compare at $698
Save 23.1%IGI | 3.03ct | Cushion | G | VS1 | Very Good
From $537
Compare at $698
Save 31.5%IGI | 3.08ct | Cushion | G | VS1 | Very Good
From $538
Compare at $785
Save 31.5%IGI | 3.08ct | Cushion | G | VS1 | Very Good
From $538
Compare at $785
IGI | 3.08ct | Cushion | G | VS1 | Very Good
From $538
Compare at $785
Save 22.1%IGI | 3.04ct | Cushion | G | VS1 | Very Good
From $538
Compare at $691
Save 58.8%IGI | 3.02ct | Cushion | G | VS2 | Very Good
From $539
Compare at $1,307
Save 31.5%IGI | 3.09ct | Cushion | G | VS1 | Very Good
From $540
Compare at $788
Save 31.6%IGI | 3.06ct | Cushion | G | VS1 | Very Good
From $540
Compare at $789
IGI | 3.09ct | Cushion | G | VS1 | Very Good
From $540
Compare at $788
Save 42.6%IGI | 3.09ct | Cushion | G | VS1 | Very Good
From $540
Compare at $940
Save 60.4%IGI | 3.09ct | Cushion | G | VS2 | Ideal
From $540
Compare at $1,365
Save 70%IGI | 3.03ct | Cushion | H | VVS2 | Ideal
From $541
Compare at $1,805
IGI | 3.1ct | Cushion | G | VS1 | Very Good
From $541
Compare at $945
Save 40.9%IGI | 3.06ct | Cushion | G | VS1 | Ideal
From $543
Compare at $919
Save 22%IGI | 3.06ct | Cushion | G | VS1 | Very Good
From $543
Compare at $696
Save 22.1%IGI | 3.07ct | Cushion | G | VS1 | Very Good
From $544
Compare at $698
Save 23.1%IGI | 3.07ct | Cushion | G | VS1 | Very Good
From $544
Compare at $707
Save 23.1%IGI | 3.07ct | Cushion | G | VS1 | Very Good
From $544
Compare at $707
Save 22.1%IGI | 3.03ct | Cushion | G | VS1 | Very Good
From $544
Compare at $698
Save 39.9%IGI | 3.08ct | Cushion | G | VS1 | Very Good
From $546
Compare at $908
Save 22%IGI | 3.08ct | Cushion | G | VS1 | Very Good
From $546
Compare at $700
Entry pricing in this category starts around $431.
What to Know When Shopping for 3 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $12,189 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $1,654 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Cushion cuts come in standard and modified brilliant varieties. Modified brilliants tend to show more fire, while standard cushions have broader facets.
Frequently Asked Questions
We currently track 6,650 comparable stones in this segment. Prices start around $431 and go up to $12,620.
Based on the latest market data, the average asking price is about $2,415 with a median around $1,654.
The observed spread is roughly $12,189 across tracked listings, which is about 96.6% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $2,415. The median price is $1,654, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 11 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $12,189 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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