1.3 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 1.3 carat cushion lab grown diamonds usually range from $302 to $17,011, with an average price of $601.In the last month, prices for these diamonds are down 2%.Compare 1,247 verified listings across 9 retailers tracked by CaratRadar.
1.3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,247 verified 1.3-carat cushion lab grown diamonds listed across 9 online retailers. Prices in this segment range from $302 to $17,011, with an average asking price of $601 and a median of $522.
The price spread of $16,709 (98.2% 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.
1,247 diamonds tracked in this segment
Price range: $302 to $17,011
Average price: $601
Median price: $522
Available across 9 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,247
$302
$601
$522
$17,011
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 72.3%1.25ct | Cushion | F | VS1 | Very Good
From $560
Compare at $2,020
IGISave 72.7%1.25ct | Cushion | G | VVS2 | Very Good
From $505
Compare at $1,850
IGISave 71.4%1.25ct | Cushion | D | VVS1 | Ideal
From $673
Compare at $2,350
GIASave 66.5%1.25ct | Cushion | F | VS1 | Excellent
From $589
Compare at $1,760
GIASave 79.1%1.25ct | Cushion | D | VVS1 | Excellent
From $617
Compare at $2,960
GIASave 81.2%1.25ct | Cushion | E | VVS2 | Excellent
From $752
Compare at $4,000
GIASave 27.1%1.25ct | Cushion | D | VS2 | Ideal
From $1,510
Compare at $2,070
GIASave 79%1.25ct | Cushion | D | VS1 | Excellent
From $681
Compare at $3,250
GIASave 79.1%1.25ct | Cushion | D | VVS1 | Ideal
From $617
Compare at $2,960
GIASave 79.1%1.25ct | Cushion | D | VVS1 | Excellent
From $617
Compare at $2,960
IGISave 72.3%1.25ct | Cushion | F | VS1 | Very Good
From $560
Compare at $2,020
IGI1.25ct | Cushion | E | VS1 | Ideal
From $406
Compare at $417
IGISave 71.1%1.25ct | Cushion | D | VVS1 | Ideal
From $626
Compare at $2,164
IGISave 72.5%1.25ct | Cushion | E | VVS1 | Ideal
From $605
Compare at $2,200
IGISave 13.9%1.25ct | Cushion | D | VVS2 | Very Good
From $558
Compare at $648
IGISave 63.2%1.25ct | Cushion | E | VS1 | Very Good
From $618
Compare at $1,681
IGISave 78.6%1.25ct | Cushion | D | VS1 | Ideal
From $536
Compare at $2,500
1.25ct | Cushion | D | VS1 | Good
From $511
Compare at $1,550
IGISave 43.4%1.25ct | Cushion | FANCY | VS2 | Very Good
From $700
Compare at $1,238
IGISave 74.7%1.25ct | Cushion | D | VVS2 | Ideal
From $509
Compare at $2,010
IGISave 44.7%1.25ct | Cushion | D | VS1 | Good
From $575
Compare at $1,040
IGISave 18.3%1.25ct | Cushion | D | VS1 | Very Good
From $538
Compare at $659
IGISave 83%1.25ct | Cushion | D | IF | Very Good
From $821
Compare at $4,840
IGISave 72%1.25ct | Cushion | D | VVS1 | Very Good
From $591
Compare at $2,110
IGISave 75.7%1.25ct | Cushion | D | VVS1 | Ideal
From $517
Compare at $2,130
IGISave 69.1%1.25ct | Cushion | E | VS2 | Ideal
From $472
Compare at $1,530
IGISave 61.3%1.25ct | Cushion | D | IF | Ideal
From $1,369
Compare at $3,540
GIASave 82.1%1.25ct | Cushion | F | IF | Excellent
From $996
Compare at $5,570
IGISave 59.4%1.25ct | Cushion | G | VS2 | Ideal
From $519
Compare at $1,280
IGISave 57.2%1.25ct | Cushion | E | VS1 | Ideal
From $491
Compare at $1,145
IGISave 69.4%1.25ct | Cushion | G | VS2 | Ideal
From $414
Compare at $1,350
IGISave 71.1%1.25ct | Cushion | D | VS1 | Ideal
From $771
Compare at $2,670
IGISave 76.9%1.25ct | Cushion | E | VVS1 | Excellent
From $480
Compare at $2,077
IGISave 74.1%1.25ct | Cushion | D | VVS2 | Excellent
From $482
Compare at $1,860
IGISave 77.6%1.25ct | Cushion | D | VS1 | Ideal
From $449
Compare at $2,000
IGISave 63.3%1.25ct | Cushion | D | VS1 | Ideal
From $583
Compare at $1,590
IGISave 73.7%1.25ct | Cushion | E | VVS2 | Ideal
From $623
Compare at $2,370
IGISave 81.8%1.25ct | Cushion | D | VVS2 | Ideal
From $662
Compare at $3,640
IGISave 69.8%1.25ct | Cushion | D | VS1 | Ideal
From $468
Compare at $1,550
IGISave 72.6%1.25ct | Cushion | D | VVS2 | Ideal
From $520
Compare at $1,900
IGISave 68.7%1.25ct | Cushion | D | VS2 | Ideal
From $507
Compare at $1,620
GCALSave 75.1%1.25ct | Cushion | I | VS1 | Very Good
From $431
Compare at $1,730
IGISave 66.5%1.25ct | Cushion | D | VVS2 | Ideal
From $556
Compare at $1,660
IGISave 77.3%1.25ct | Cushion | D | VVS1 | Very Good
From $515
Compare at $2,270
IGISave 62.6%1.25ct | Cushion | E | VVS2 | Very Good
From $545
Compare at $1,457
IGISave 66.4%1.25ct | Cushion | D | VVS2 | Very Good
From $515
Compare at $1,532
IGISave 68%1.25ct | Cushion | E | VVS2 | Very Good
From $531
Compare at $1,660
IGISave 75.6%1.25ct | Cushion | D | VVS1 | Ideal
From $528
Compare at $2,160
IGISave 56.9%1.25ct | Cushion | D | VS1 | Very Good
From $515
Compare at $1,194
IGISave 72.5%1.25ct | Cushion | E | VVS2 | Very Good
From $551
Compare at $2,000
Entry pricing in this category starts around $302.
What to Know When Shopping for 1.3 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $16,709 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 $522 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 1,247 comparable stones in this segment. Prices start around $302 and go up to $17,011.
Based on the latest market data, the average asking price is about $601 with a median around $522.
The observed spread is roughly $16,709 across tracked listings, which is about 98.2% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $522, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 9 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 $16,709 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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