1.3 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 1.3 carat cushion lab grown diamonds usually range from $283 to $4,465, with an average price of $1,004.In the last month, prices for these diamonds are down 1.6%.Compare 956 verified listings across 8 retailers tracked by CaratRadar.
1.3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 956 verified 1.3-carat cushion lab grown diamonds listed across 8 online retailers. Prices in this segment range from $283 to $4,465, with an average asking price of $1,004 and a median of $824.
The price spread of $4,182 (93.7% 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.
956 diamonds tracked in this segment
Price range: $283 to $4,465
Average price: $1,004
Median price: $824
Available across 8 retailers
Savings potential: up to 93.7%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
956
$283
$1,004
$824
$4,465
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 72.4%GCAL | 1.31ct | Cushion | D | VS1 | Excellent
From $645
Compare at $2,340
Save 72.4%GCAL | 1.31ct | Cushion | D | VS1 | Excellent
From $645
Compare at $2,340
Save 35.7%GIA | 1.31ct | Cushion | H | VS2 | Ideal
From $1,350
Compare at $2,100
Save 68.8%GIA | 1.31ct | Cushion | E | VVS1 | Excellent
From $1,242
Compare at $3,980
Save 47.1%GIA | 1.31ct | Cushion | D | VS2 | Ideal
From $1,280
Compare at $2,420
Save 76.5%GIA | 1.31ct | Cushion | E | VVS2 | Ideal
From $1,019
Compare at $4,340
Save 76.4%GIA | 1.31ct | Cushion | D | VVS2 | Excellent
From $1,122
Compare at $4,760
GIA | 1.31ct | Cushion | F | VVS2 | Excellent
From $929
Compare at $930
Save 71.8%GIA | 1.31ct | Cushion | D | VS1 | Ideal
From $814
Compare at $2,880
Save 37.8%IGI | 1.31ct | Cushion | D | VVS2 | Ideal
From $1,506
Compare at $2,420
IGI | 1.31ct | Cushion | D | VS2 | Ideal
From $486
Compare at $524
Save 68.7%IGI | 1.31ct | Cushion | D | VVS2 | Very Good
From $724
Compare at $2,310
Save 49.6%IGI | 1.31ct | Cushion | F | VVS2 | Very Good
From $539
Compare at $1,070
Save 47.2%IGI | 1.31ct | Cushion | F | VVS2 | Very Good
From $539
Compare at $1,020
Save 63%IGI | 1.31ct | Cushion | F | VVS1 | Very Good
From $540
Compare at $1,460
Save 45.1%IGI | 1.31ct | Cushion | G | VVS2 | Very Good
From $539
Compare at $980
Save 53.7%IGI | 1.31ct | Cushion | D | VVS2 | Very Good
From $1,219
Compare at $2,635
Save 73.5%IGI | 1.31ct | Cushion | F | SI1 | Very Good
From $411
Compare at $1,550
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 77.6%IGI | 1.31ct | Cushion | F | VS2 | Ideal
From $325
Compare at $1,450
Save 72.7%IGI | 1.31ct | Cushion | F | VS1 | Very Good
From $508
Compare at $1,860
Save 73.1%IGI | 1.31ct | Cushion | G | VS1 | Very Good
From $443
Compare at $1,650
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 71.3%IGI | 1.31ct | Cushion | D | VVS2 | Very Good
From $562
Compare at $1,960
Save 73.1%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $459
Compare at $1,710
Save 73.1%IGI | 1.31ct | Cushion | G | VS1 | Very Good
From $443
Compare at $1,650
Save 73.1%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $459
Compare at $1,710
Save 72.8%IGI | 1.31ct | Cushion | E | VS2 | Very Good
From $491
Compare at $1,810
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 33.3%IGI | 1.31ct | Cushion | G | VS1 | Very Good
From $625
Compare at $937
Save 74.5%IGI | 1.31ct | Cushion | D | VS1 | Ideal
From $619
Compare at $2,430
Save 73.1%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $459
Compare at $1,710
Save 73.5%IGI | 1.31ct | Cushion | G | VS2 | Ideal
From $416
Compare at $1,570
Save 73.1%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $459
Compare at $1,710
Save 66.4%IGI | 1.31ct | Cushion | D | VS1 | Ideal
From $598
Compare at $1,780
Save 56.1%IGI | 1.31ct | Cushion | E | VS2 | Ideal
From $540
Compare at $1,230
Save 72.8%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $486
Compare at $1,790
Save 73.1%IGI | 1.31ct | Cushion | F | VS2 | Very Good
From $459
Compare at $1,710
Save 59.6%IGI | 1.31ct | Cushion | F | VS1 | Excellent
From $977
Compare at $2,420
Save 73.2%IGI | 1.31ct | Cushion | F | VS1 | Very Good
From $439
Compare at $1,640
Save 73.1%IGI | 1.31ct | Cushion | G | VVS2 | Very Good
From $459
Compare at $1,710
Save 72.7%IGI | 1.31ct | Cushion | F | VS1 | Very Good
From $508
Compare at $1,860
Save 72.9%IGI | 1.31ct | Cushion | E | VS1 | Very Good
From $497
Compare at $1,830
Save 72.7%IGI | 1.31ct | Cushion | F | VS1 | Very Good
From $508
Compare at $1,860
Save 60.2%IGI | 1.31ct | Cushion | E | VS1 | Excellent
From $988
Compare at $2,480
Save 73.1%IGI | 1.31ct | Cushion | G | VS1 | Very Good
From $454
Compare at $1,690
Entry pricing in this category starts around $283.
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 $4,182 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 $824 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 956 comparable stones in this segment. Prices start around $283 and go up to $4,465.
Based on the latest market data, the average asking price is about $1,004 with a median around $824.
The observed spread is roughly $4,182 across tracked listings, which is about 93.7% 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 $824, 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 8 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 $4,182 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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