6 Carat Cushion Lab Grown Diamond Prices Comparison
As of October 2026, 6 carat cushion lab grown diamonds in the 6.00–6.99 carat benchmark range usually range from $481 to $51,450, with an average price of $4,594.In the last month, prices for these diamonds are down 0.6%.Compare 1,612 verified listings across 14 retailers tracked by CaratRadar.
6 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,612 verified 6-carat cushion lab grown diamonds in the 6.00–6.99 carat benchmark range, listed across 14 online retailers. Prices in this segment range from $481 to $51,450, with an average asking price of $4,594 and a median of $3,126.
The price spread of $50,969 (99.1% 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 use the same benchmark range throughout the page and 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.
1,612 diamonds tracked in the 6.00–6.99 carat benchmark
Price range: $481 to $51,450
Average price: $4,594
Median price: $3,126
Available across 14 retailers
Savings potential: up to 99.1%
Price Range Overview
As of Oct 15, 2026Real market range for this carat, shape, and diamond type.
1,612
$481
$4,594
$3,126
$51,450
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
Save 63.9%IGI | 6.04ct | Cushion | G | SI1 | Excellent
From $961
Compare at $2,665
Save 78.4%IGI | 6ct | Cushion | F | VVS2 | Excellent
From $964
Compare at $4,465
Save 78.4%IGI | 6.04ct | Cushion | F | VVS2 | Very Good
From $971
Compare at $4,495
Save 71.2%IGI | 6.05ct | Cushion | F | VVS2 | Ideal
From $972
Compare at $3,377
Save 71.2%IGI | 6.05ct | Cushion | F | VVS2 | Excellent
From $972
Compare at $3,377
Save 78.4%IGI | 6.06ct | Cushion | F | VS1 | Good
From $974
Compare at $4,510
Save 78.4%IGI | 6.08ct | Cushion | F | VVS2 | Ideal
From $977
Compare at $4,525
Save 71.2%IGI | 6.09ct | Cushion | F | VVS2 | Very Good
From $978
Compare at $3,399
Save 78.4%IGI | 6.1ct | Cushion | F | VVS2 | Very Good
From $980
Compare at $4,540
Save 61.7%IGI | 6.02ct | Cushion | E | VS1 | Excellent
From $1,002
Compare at $2,617
Save 78.4%IGI | 6.02ct | Cushion | E | VS1 | Ideal
From $1,008
Compare at $4,670
Save 79%IGI | 6.44ct | Cushion | F | VVS2 | Ideal
From $1,008
Compare at $4,793
Save 71.2%IGI | 6.03ct | Cushion | E | VS1 | Very Good
From $1,010
Compare at $3,509
Save 78.4%IGI | 6.04ct | Cushion | E | VS1 | Very Good
From $1,012
Compare at $4,686
Save 71.2%IGI | 6.05ct | Cushion | E | VS1 | Ideal
From $1,013
Compare at $3,521
Save 79%IGI | 6.5ct | Cushion | E | VVS2 | Excellent
From $1,014
Compare at $4,821
Save 79%IGI | 6.5ct | Cushion | E | VVS2 | Very Good
From $1,014
Compare at $4,821
Save 71.9%IGI | 6.51ct | Cushion | E | VVS2 | Very Good
From $1,016
Compare at $3,621
Save 79%IGI | 6.52ct | Cushion | E | VVS2 | Excellent
From $1,017
Compare at $4,835
Save 72%IGI | 6.57ct | Cushion | E | VVS2 | Very Good
From $1,025
Compare at $3,655
Save 78.6%IGI | 6.01ct | Cushion | G | VS2 | Ideal
From $1,029
Compare at $4,800
Save 72%IGI | 6.03ct | Cushion | E | VVS2 | Excellent
From $1,034
Compare at $3,687
Save 79%IGI | 6.04ct | Cushion | E | VVS2 | Excellent
From $1,036
Compare at $4,924
Save 61.2%IGI | 6.06ct | Cushion | F | VVS2 | Good
From $1,038
Compare at $2,677
Save 71.9%IGI | 6.07ct | Cushion | E | VVS2 | Excellent
From $1,041
Compare at $3,711
Save 71.9%IGI | 6.07ct | Cushion | E | VVS2 | Very Good
From $1,041
Compare at $3,711
Save 78%IGI | 6.07ct | Cushion | E | VVS2 | Very Good
From $1,041
Compare at $4,733
Save 79%IGI | 6.08ct | Cushion | E | VVS2 | Excellent
From $1,043
Compare at $4,956
Save 79.8%IGI | 6.01ct | Cushion | G | VS1 | Ideal
From $1,051
Compare at $5,210
Save 79.6%IGI | 6.02ct | Cushion | G | VS1 | Ideal
From $1,064
Compare at $5,220
Save 79%IGI | 6ct | Cushion | F | VVS2 | Ideal
From $1,071
Compare at $5,094
Save 79%IGI | 6ct | Cushion | F | VS1 | Very Good
From $1,071
Compare at $5,094
Save 72%IGI | 6.01ct | Cushion | F | VVS2 | Ideal
From $1,073
Compare at $3,827
Save 79%IGI | 6.04ct | Cushion | F | VVS2 | Ideal
From $1,079
Compare at $5,128
Save 79.2%IGI | 6ct | Cushion | G | VS1 | Ideal
From $1,082
Compare at $5,210
Save 72%IGI | 6.07ct | Cushion | F | VVS2 | Ideal
From $1,084
Compare at $3,866
Save 79%IGI | 6.08ct | Cushion | F | VVS2 | Ideal
From $1,085
Compare at $5,162
Save 72%IGI | 6.09ct | Cushion | F | VS1 | Ideal
From $1,087
Compare at $3,878
Save 72%IGI | 6.09ct | Cushion | F | VVS2 | Ideal
From $1,087
Compare at $3,878
Save 79%IGI | 6.02ct | Cushion | F | VS1 | Excellent
From $1,096
Compare at $5,216
Save 67.4%IGI | 6.07ct | Cushion | F | VVS2 | Very Good
From $1,106
Compare at $3,397
Save 41.9%IGI | 6.03ct | Cushion | F | VS1 | Very Good
From $1,109
Compare at $1,909
Save 36.8%IGI | 6.02ct | Cushion | G | VVS2 | Excellent
From $1,110
Compare at $1,755
Save 56%IGI | 6.25ct | Cushion | F | VS2 | Very Good
From $1,118
Compare at $2,540
Save 38.8%IGI | 6.06ct | Cushion | G | VS2 | Very Good
From $1,123
Compare at $1,836
Save 61.6%IGI | 6.01ct | Cushion | E | VS2 | Very Good
From $1,132
Compare at $2,948
Save 79%IGI | 6.01ct | Cushion | E | VS1 | Ideal
From $1,149
Compare at $5,467
Save 72%IGI | 6.51ct | Cushion | F | VVS2 | Ideal
From $1,150
Compare at $4,103
Save 79%IGI | 6.52ct | Cushion | F | VVS2 | Very Good
From $1,152
Compare at $5,479
Save 79%IGI | 6.08ct | Cushion | F | VS2 | Ideal
From $1,152
Compare at $5,478
Entry pricing in this benchmark range starts around $481.
What to Know When Shopping for 6 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $50,969 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 $3,126 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 1,612 comparable stones in the 6.00–6.99 carat benchmark range. Prices start around $481 and go up to $51,450.
Based on the latest market data, the average asking price is about $4,594 with a median around $3,126.
The observed spread is roughly $50,969 across tracked listings, which is about 99.1% from highest to lowest offer in the 6.00–6.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $4,594. The median price is $3,126, 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 14 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 $50,969 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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Tracking Lab Grown inventory for the 6.00–6.99 carat Cushion diamond benchmark.