8 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 8 carat cushion lab grown diamonds usually range from $1,277 to $48,018, with an average price of $6,720.In the last month, prices for these diamonds are down 9.7%.Compare 103 verified listings across 8 retailers tracked by CaratRadar.
8 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 103 verified 8-carat cushion lab grown diamonds listed across 8 online retailers. Prices in this segment range from $1,277 to $48,018, with an average asking price of $6,720 and a median of $4,840.
The price spread of $46,741 (97.3% 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.
103 diamonds tracked in this segment
Price range: $1,277 to $48,018
Average price: $6,720
Median price: $4,840
Available across 8 retailers
Savings potential: up to 97.3%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
103
$1,277
$6,720
$4,840
$48,018
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 77.6%IGI | 8.05ct | Cushion | H | VS2 | Ideal
From $1,335
Compare at $5,960
Save 72.2%IGI | 8.03ct | Cushion | F | VVS2 | Ideal
From $1,490
Compare at $5,356
Save 72.5%IGI | 8.06ct | Cushion | E | VVS2 | Very Good
From $1,582
Compare at $5,761
Save 70.4%IGI | 8.04ct | Cushion | F | VVS2 | Ideal
From $1,584
Compare at $5,358
Save 67.6%IGI | 8.03ct | Cushion | G | VS2 | Good
From $1,602
Compare at $4,938
Save 78.5%IGI | 8.03ct | Cushion | E | VS2 | Very Good
From $1,602
Compare at $7,449
Save 70.7%IGI | 8.05ct | Cushion | F | VS1 | Very Good
From $1,606
Compare at $5,489
Save 69.8%IGI | 8.01ct | Cushion | F | VVS2 | Very Good
From $1,626
Compare at $5,381
Save 68.5%IGI | 8.03ct | Cushion | G | VS1 | Ideal
From $1,636
Compare at $5,196
Save 68.7%IGI | 8.07ct | Cushion | G | VS1 | Ideal
From $1,644
Compare at $5,246
Save 78.1%IGI | 8.08ct | Cushion | E | VS2 | Very Good
From $1,648
Compare at $7,539
Save 67.3%IGI | 8.09ct | Cushion | G | VS2 | Very Good
From $1,659
Compare at $5,069
Save 67.9%IGI | 8.03ct | Cushion | E | VS1 | Excellent
From $1,726
Compare at $5,382
Save 76.7%IGI | 8.01ct | Cushion | E | VS2 | Very Good
From $1,738
Compare at $7,463
Save 68.4%IGI | 8.03ct | Cushion | F | VS1 | Ideal
From $1,742
Compare at $5,512
Save 67.3%IGI | 8.01ct | Cushion | E | VS1 | Very Good
From $1,754
Compare at $5,363
Save 67.5%IGI | 8.05ct | Cushion | E | VS1 | Very Good
From $1,762
Compare at $5,414
Save 69.4%IGI | 8.06ct | Cushion | E | VVS2 | Very Good
From $1,765
Compare at $5,761
Save 70.2%IGI | 8.08ct | Cushion | E | VS1 | Ideal
From $1,830
Compare at $6,140
Save 65.5%IGI | 8.04ct | Cushion | G | VS1 | Ideal
From $1,838
Compare at $5,325
Save 70.3%IGI | 8.08ct | Cushion | F | VS2 | Very Good
From $1,839
Compare at $6,190
Save 19.9%IGI | 8ct | Cushion | F | VVS2 | Very Good
From $1,843
Compare at $2,301
Save 27.3%IGI | 8.06ct | Cushion | E | VVS2 | Very Good
From $1,844
Compare at $2,538
Save 66.7%IGI | 8.04ct | Cushion | F | VS1 | Very Good
From $1,848
Compare at $5,552
Save 19.9%IGI | 8.02ct | Cushion | F | VVS2 | Very Good
From $1,848
Compare at $2,307
Save 65%IGI | 8.03ct | Cushion | G | VS1 | Excellent
From $1,850
Compare at $5,282
Save 27.4%IGI | 8.09ct | Cushion | F | VS1 | Ideal
From $1,850
Compare at $2,547
Save 29.9%IGI | 8.04ct | Cushion | E | VVS2 | Very Good
From $1,850
Compare at $2,641
Save 20%IGI | 8.05ct | Cushion | F | VVS2 | Very Good
From $1,855
Compare at $2,320
Save 27.4%IGI | 8ct | Cushion | E | VVS2 | Very Good
From $1,877
Compare at $2,584
Save 65.5%IGI | 8.05ct | Cushion | E | VS1 | Excellent
From $1,881
Compare at $5,446
Save 54.3%IGI | 8.03ct | Cushion | E | VS1 | Ideal
From $1,934
Compare at $4,236
Save 67.8%IGI | 8.05ct | Cushion | G | VVS2 | Very Good
From $1,968
Compare at $6,103
Save 13%IGI | 8.06ct | Cushion | E | VS2 | Very Good
From $1,980
Compare at $2,276
Save 73.6%IGI | 8ct | Cushion | E | VS2 | Ideal
From $1,985
Compare at $7,523
Save 62%IGI | 8.03ct | Cushion | E | VS1 | Very Good
From $2,096
Compare at $5,510
Save 61.9%IGI | 8.02ct | Cushion | E | VS1 | Ideal
From $2,097
Compare at $5,499
Save 62.7%IGI | 8.01ct | Cushion | F | VVS2 | Very Good
From $2,171
Compare at $5,821
Save 53.8%IGI | 8.05ct | Cushion | E | VVS2 | Excellent
From $2,180
Compare at $4,721
Save 31.3%IGI | 8.08ct | Cushion | E | VVS2 | Ideal
From $2,196
Compare at $3,195
Save 49.8%IGI | 8.03ct | Cushion | F | VS1 | Ideal
From $2,219
Compare at $4,420
Save 79.5%IGI | 8.07ct | Cushion | E | VVS2 | Very Good
From $2,262
Compare at $11,030
Save 68.5%IGI | 8.03ct | Cushion | F | VS1 | Very Good
From $2,278
Compare at $7,227
Save 67.8%IGI | 8.08ct | Cushion | FANCY | VVS2 | Very Good
From $2,281
Compare at $7,090
Save 49.2%IGI | 8.09ct | Cushion | F | VS1 | Excellent
From $2,305
Compare at $4,538
Save 68.5%IGI | 8.01ct | Cushion | F | VS2 | Very Good
From $2,413
Compare at $7,666
Save 73.3%IGI | 8ct | Cushion | FANCY | VS1 | Very Good
From $2,415
Compare at $9,057
Save 73.3%IGI | 8.01ct | Cushion | FANCY | VS1 | Excellent
From $2,418
Compare at $9,068
Save 59.4%IGI | 8.04ct | Cushion | E | VVS2 | Very Good
From $2,424
Compare at $5,967
Save 75.8%IGI | 8.01ct | Cushion | H | VS2 | Ideal
From $2,462
Compare at $10,190
Entry pricing in this category starts around $1,277.
What to Know When Shopping for 8 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $46,741 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 $4,840 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 103 comparable stones in this segment. Prices start around $1,277 and go up to $48,018.
Based on the latest market data, the average asking price is about $6,720 with a median around $4,840.
The observed spread is roughly $46,741 across tracked listings, which is about 97.3% 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 $6,720. The median price is $4,840, 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 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 $46,741 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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