11 Carat Cushion Lab Grown Diamond Prices Comparison
As of July 2026, 11 carat cushion lab grown diamonds usually range from $1,640 to $41,880, with an average price of $9,531.In the last month, prices for these diamonds are down 1%.Compare 24 verified listings across 3 retailers tracked by CaratRadar.
11 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 24 verified 11-carat cushion lab grown diamonds listed across 3 online retailers. Prices in this segment range from $1,640 to $41,880, with an average asking price of $9,531 and a median of $8,390.
The price spread of $40,240 (96.1% 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.
24 diamonds tracked in this segment
Price range: $1,640 to $41,880
Average price: $9,531
Median price: $8,390
Available across 3 retailers
Savings potential: up to 96.1%
Price Range Overview
As of Jul 12, 2026Real market range for this carat, shape, and diamond type.
24
$1,640
$9,531
$8,390
$41,880
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 11.05ct | Cushion | G | VS1 | Ideal
From $2,237
Compare at $9,780
Save 78.4%IGI | 11.01ct | Cushion | F | VVS2 | Excellent
From $2,261
Compare at $10,463
Save 78.1%IGI | 11.09ct | Cushion | F | VVS2 | Excellent
From $2,309
Compare at $10,539
Save 77.8%IGI | 11.09ct | Cushion | F | VVS2 | Excellent
From $2,342
Compare at $10,539
IGI | 11.07ct | Cushion | F | VVS2 | Ideal
From $2,369
Compare at $10,646
IGI | 11.07ct | Cushion | F | VVS2 | Ideal
From $2,369
Compare at $10,646
Save 75.6%IGI | 11.09ct | Cushion | G | VS1 | Ideal
From $2,421
Compare at $9,922
Save 75.6%IGI | 11.05ct | Cushion | E | VS1 | Excellent
From $2,442
Compare at $10,005
Save 76.2%IGI | 11ct | Cushion | F | VS1 | Ideal
From $2,465
Compare at $10,346
Save 72.5%IGI | 11.01ct | Cushion | G | VS2 | Ideal
From $2,530
Compare at $9,211
Save 72.9%IGI | 11.06ct | Cushion | G | VS1 | Ideal
From $2,654
Compare at $9,797
Save 78.6%IGI | 11.09ct | Cushion | E | VS1 | Excellent
From $2,709
Compare at $12,643
Save 69.4%IGI | 11.04ct | Cushion | F | VVS2 | Excellent
From $3,295
Compare at $10,761
IGI | 11.07ct | Cushion | E | VS1 | Ideal
From $3,309
Compare at $10,455
Save 76.5%IGI | 11.03ct | Cushion | FANCY | VS2 | Very Good
From $3,443
Compare at $14,621
Save 76.4%IGI | 11.01ct | Cushion | FANCY | VVS2 | Very Good
From $3,483
Compare at $14,786
Save 76.4%IGI | 11.03ct | Cushion | FANCY | VVS2 | Very Good
From $3,489
Compare at $14,812
Save 76.4%IGI | 11.03ct | Cushion | FANCY | VS1 | Very Good
From $3,601
Compare at $15,290
Save 70.9%IGI | 11.03ct | Cushion | FANCY | VS1 | Very Good
From $4,501
Compare at $15,481
Save 74%IGI | 11.06ct | Cushion | FANCY | VS1 | Excellent
From $4,951
Compare at $19,069
Save 75.7%IGI | 11.06ct | Cushion | FANCY | VS1 | Very Good
From $5,846
Compare at $24,052
IGI | 11.01ct | Cushion | FANCY | VS1 | Very Good
From $6,920
Compare at $32,910
Save 43.5%IGI | 11.09ct | Cushion | F | VS1 | Ideal
From $8,090
Compare at $14,316
Save 75.5%IGI | 11.08ct | Cushion | FANCY | VS2 | Good
From $9,405
Compare at $38,399
Entry pricing in this category starts around $1,640.
What to Know When Shopping for 11 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $40,240 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 $8,390 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 24 comparable stones in this segment. Prices start around $1,640 and go up to $41,880.
Based on the latest market data, the average asking price is about $9,531 with a median around $8,390.
The observed spread is roughly $40,240 across tracked listings, which is about 96.1% 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 $9,531. The median price is $8,390, 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 3 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 $40,240 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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