6.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 6.5 carat cushion lab grown diamonds usually range from $920 to $62,648, with an average price of $6,272.In the last month, prices for these diamonds are up 0.3%.Compare 102 verified listings across 6 retailers tracked by CaratRadar.
6.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 102 verified 6.5-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $920 to $62,648, with an average asking price of $6,272 and a median of $4,265.
The price spread of $61,728 (98.5% 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.
102 diamonds tracked in this segment
Price range: $920 to $62,648
Average price: $6,272
Median price: $4,265
Available across 6 retailers
Savings potential: up to 98.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
102
$920
$6,272
$4,265
$62,648
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 73.4%IGI | 6.5ct | Cushion | G | VS1 | Ideal
From $2,035
Compare at $7,640
Save 85.6%IGI | 6.5ct | Cushion | F | VS1 | Ideal
From $1,943
Compare at $13,450
Save 78.1%IGI | 6.5ct | Cushion | F | VVS2 | Excellent
From $1,845
Compare at $8,440
Save 67.8%IGI | 6.5ct | Cushion | E | VS2 | Ideal
From $1,694
Compare at $5,265
IGI | 6.5ct | Cushion | F | VS1 | Very Good
From $2,064
Compare at $2,065
Save 29.5%IGI | 6.5ct | Cushion | E | VVS2 | Very Good
From $1,741
Compare at $2,468
IGI | 6.5ct | Cushion | D | VVS1 | Ideal
From $10,985
Compare at $10,985
Save 84.4%IGI | 6.5ct | Cushion | D | VS1 | Very Good
From $2,617
Compare at $16,770
Save 84.1%IGI | 6.5ct | Cushion | E | VS1 | Ideal
From $2,590
Compare at $16,310
Save 61.1%IGI | 6.5ct | Cushion | FANCY | VS1 | Very Good
From $6,847
Compare at $17,603
Save 71.3%IGI | 6.51ct | Cushion | H | VS1 | Ideal
From $2,879
Compare at $10,020
Save 74.9%IGI | 6.51ct | Cushion | G | VS1 | Ideal
From $2,038
Compare at $8,120
Save 37.9%IGI | 6.51ct | Cushion | F | VVS2 | Ideal
From $2,020
Compare at $3,253
Save 72.4%IGI | 6.51ct | Cushion | F | VS1 | Ideal
From $3,824
Compare at $13,840
Save 76.1%IGI | 6.51ct | Cushion | G | VS2 | Very Good
From $1,832
Compare at $7,660
Save 74.5%IGI | 6.51ct | Cushion | F | VS1 | Excellent
From $2,857
Compare at $11,200
Save 78%IGI | 6.51ct | Cushion | E | VVS2 | Ideal
From $3,601
Compare at $16,340
Save 75.1%IGI | 6.51ct | Cushion | E | VVS2 | Ideal
From $4,101
Compare at $16,460
Save 87.3%IGI | 6.51ct | Cushion | F | VVS2 | Ideal
From $1,847
Compare at $14,590
Save 72.8%IGI | 6.51ct | Cushion | D | VVS2 | Very Good
From $5,053
Compare at $18,550
Save 42.7%IGI | 6.51ct | Cushion | E | VVS2 | Excellent
From $1,743
Compare at $3,044
Save 71.9%IGI | 6.51ct | Cushion | F | VS1 | Ideal
From $2,354
Compare at $8,380
Save 61.2%IGI | 6.51ct | Cushion | FANCY | VS1 | Very Good
From $5,741
Compare at $14,787
Save 42.9%IGI | 6.51ct | Cushion | F | VS1 | Very Good
From $1,515
Compare at $2,655
Save 85.4%IGI | 6.51ct | Cushion | E | VS2 | Ideal
From $1,884
Compare at $12,940
Save 76.4%IGI | 6.51ct | Cushion | F | VVS2 | Very Good
From $1,994
Compare at $8,460
Save 76.3%IGI | 6.51ct | Cushion | E | VVS2 | Ideal
From $3,895
Compare at $16,450
Save 71.5%GIA | 6.52ct | Cushion | E | IF | Excellent
From $30,360
Compare at $106,650
Save 73.5%GIA | 6.52ct | Cushion | E | VVS1 | Excellent
From $10,338
Compare at $39,050
Save 76.3%IGI | 6.52ct | Cushion | G | VS1 | Ideal
From $2,041
Compare at $8,610
Save 80.6%IGI | 6.52ct | Cushion | F | VS2 | Excellent
From $2,251
Compare at $11,590
Save 80.5%IGI | 6.52ct | Cushion | E | VVS2 | Excellent
From $3,215
Compare at $16,500
Save 76.4%IGI | 6.52ct | Cushion | D | VS2 | Ideal
From $6,204
Compare at $26,330
Save 74.5%IGI | 6.52ct | Cushion | F | VS1 | Excellent
From $2,862
Compare at $11,220
Save 59.5%IGI | 6.52ct | Cushion | E | VVS1 | Very Good
From $7,470
Compare at $18,430
Save 75.8%IGI | 6.52ct | Cushion | F | VS1 | Excellent
From $1,893
Compare at $7,820
Save 34.9%IGI | 6.52ct | Cushion | E | VVS2 | Ideal
From $2,843
Compare at $4,369
Save 75.3%IGI | 6.52ct | Cushion | E | VVS2 | Excellent
From $3,355
Compare at $13,600
Save 67%IGI | 6.52ct | Cushion | E | VS1 | Ideal
From $1,850
Compare at $5,605
Save 58.1%IGI | 6.52ct | Cushion | FANCY | VVS2 | Good
From $5,256
Compare at $12,531
Save 38.2%IGI | 6.52ct | Cushion | G | VS1 | Ideal
From $1,908
Compare at $3,088
Save 84.2%IGI | 6.52ct | Cushion | F | VVS2 | Ideal
From $2,304
Compare at $14,630
Save 75.3%IGI | 6.52ct | Cushion | E | VVS2 | Excellent
From $3,439
Compare at $13,940
Save 78.9%IGI | 6.52ct | Cushion | F | VVS2 | Ideal
From $2,170
Compare at $10,280
Save 29.5%IGI | 6.52ct | Cushion | E | VVS2 | Very Good
From $1,746
Compare at $2,475
Save 61.2%IGI | 6.52ct | Cushion | FANCY | VS1 | Very Good
From $5,750
Compare at $14,810
Save 86.1%IGI | 6.52ct | Cushion | E | VS2 | Ideal
From $1,796
Compare at $12,960
Save 71.4%IGI | 6.53ct | Cushion | G | VS1 | Ideal
From $2,893
Compare at $10,100
Save 34.1%IGI | 6.53ct | Cushion | H | VS1 | Ideal
From $2,425
Compare at $3,680
Save 81.4%IGI | 6.53ct | Cushion | H | VS1 | Ideal
From $1,785
Compare at $9,580
Entry pricing in this category starts around $920.
What to Know When Shopping for 6.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $61,728 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 $4,265 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 102 comparable stones in this segment. Prices start around $920 and go up to $62,648.
Based on the latest market data, the average asking price is about $6,272 with a median around $4,265.
The observed spread is roughly $61,728 across tracked listings, which is about 98.5% 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 $4,265, 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 6 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 $61,728 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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