8 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 8 carat cushion lab grown diamonds usually range from $1,470 to $54,964, with an average price of $7,667.In the last month, prices for these diamonds are down 0.5%.Compare 182 verified listings across 6 retailers tracked by CaratRadar.
8 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 182 verified 8-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $1,470 to $54,964, with an average asking price of $7,667 and a median of $5,326.
The price spread of $53,494 (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.
182 diamonds tracked in this segment
Price range: $1,470 to $54,964
Average price: $7,667
Median price: $5,326
Available across 6 retailers
Savings potential: up to 97.3%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
182
$1,470
$7,667
$5,326
$54,964
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 72.7%GIA | 8ct | Cushion | E | VS2 | Excellent
From $12,496
Compare at $45,830
Save 25%IGI | 8ct | Cushion | E | VS2 | Ideal
From $2,895
Compare at $3,857
Save 75.6%IGI | 8ct | Cushion | F | VS2 | Ideal
From $2,730
Compare at $11,170
Save 84.2%IGI | 8ct | Cushion | G | VS1 | Ideal
From $2,241
Compare at $14,200
Save 87.4%IGI | 8ct | Cushion | F | VVS2 | Ideal
From $2,251
Compare at $17,930
Save 74.4%IGI | 8ct | Cushion | G | VS1 | Very Good
From $2,252
Compare at $8,810
Save 66.4%IGI | 8ct | Cushion | F | VS1 | Ideal
From $4,800
Compare at $14,280
Save 45.7%IGI | 8ct | Cushion | FANCY | VS2 | Excellent
From $6,552
Compare at $12,072
Save 75.8%IGI | 8ct | Cushion | F | VS2 | Ideal
From $2,560
Compare at $10,560
Save 76%IGI | 8ct | Cushion | F | VS2 | Very Good
From $2,252
Compare at $9,400
Save 66.2%GIA | 8.01ct | Cushion | F | VVS1 | Excellent
From $17,192
Compare at $50,813
Save 70.4%GIA | 8.01ct | Cushion | G | VS2 | Very Good
From $4,846
Compare at $16,349
Save 76.7%GIA | 8.01ct | Cushion | F | VS1 | Excellent
From $6,330
Compare at $27,150
Save 64%IGI | 8.01ct | Cushion | H | VS1 | Ideal
From $4,246
Compare at $11,810
Save 60.2%IGI | 8.01ct | Cushion | H | VS2 | Ideal
From $4,052
Compare at $10,190
Save 81.6%IGI | 8.01ct | Cushion | G | VS2 | Ideal
From $2,413
Compare at $13,100
IGI | 8.01ct | Cushion | G | VS1 | Very Good
From $2,986
Compare at $2,990
Save 77.4%IGI | 8.01ct | Cushion | G | VVS1 | Excellent
From $4,000
Compare at $17,730
Save 79.6%IGI | 8.01ct | Cushion | E | VVS2 | Ideal
From $4,105
Compare at $20,160
Save 85.2%IGI | 8.01ct | Cushion | F | VS1 | Ideal
From $2,447
Compare at $16,580
Save 76.1%IGI | 8.01ct | Cushion | E | VVS2 | Excellent
From $5,286
Compare at $22,100
Save 71.5%IGI | 8.01ct | Cushion | E | VVS2 | Ideal
From $2,675
Compare at $9,370
Save 75.4%IGI | 8.01ct | Cushion | G | VS1 | Excellent
From $3,800
Compare at $15,430
Save 85.9%IGI | 8.01ct | Cushion | G | VVS2 | Ideal
From $2,247
Compare at $15,920
Save 81.7%IGI | 8.01ct | Cushion | E | VVS2 | Good
From $2,293
Compare at $12,550
Save 41%IGI | 8.01ct | Cushion | F | VS1 | Ideal
From $3,074
Compare at $5,209
Save 80.3%IGI | 8.01ct | Cushion | E | VVS2 | Excellent
From $3,980
Compare at $20,160
Save 84.1%IGI | 8.01ct | Cushion | F | VVS2 | Very Good
From $2,856
Compare at $17,980
Save 83.8%IGI | 8.01ct | Cushion | E | VS1 | Ideal
From $2,413
Compare at $14,890
Save 82.3%IGI | 8.01ct | Cushion | D | VS1 | Ideal
From $3,365
Compare at $19,010
Save 86.5%IGI | 8.01ct | Cushion | F | VS1 | Ideal
From $2,239
Compare at $16,570
Save 76%IGI | 8.01ct | Cushion | G | VS1 | Very Good
From $2,255
Compare at $9,410
Save 84.4%IGI | 8.01ct | Cushion | F | VS2 | Very Good
From $2,225
Compare at $14,220
Save 86.1%IGI | 8.01ct | Cushion | E | VS1 | Very Good
From $2,790
Compare at $20,030
Save 61.1%IGI | 8.01ct | Cushion | FANCY | VVS2 | Good
From $8,158
Compare at $20,993
Save 88.1%IGI | 8.01ct | Cushion | H | VVS2 | Excellent
From $1,610
Compare at $13,560
Save 88.5%IGI | 8.01ct | Cushion | G | VS1 | Ideal
From $1,635
Compare at $14,210
Save 75%IGI | 8.01ct | Cushion | E | VS1 | Very Good
From $4,999
Compare at $19,960
Save 61.3%GIA | 8.02ct | Cushion | G | VS1 | Very Good
From $5,385
Compare at $13,901
Save 60.8%GIA | 8.02ct | Cushion | E | VS1 | Very Good
From $10,374
Compare at $26,466
Save 25.3%IGI | 8.02ct | Cushion | H | VS1 | Ideal
From $3,475
Compare at $4,655
Save 67.2%IGI | 8.02ct | Cushion | F | VVS2 | Ideal
From $5,885
Compare at $17,930
Save 85.2%IGI | 8.02ct | Cushion | F | VS1 | Ideal
From $2,450
Compare at $16,600
Save 87.5%IGI | 8.02ct | Cushion | F | VVS2 | Ideal
From $2,242
Compare at $18,000
Save 76.3%IGI | 8.02ct | Cushion | D | VVS2 | Excellent
From $11,480
Compare at $48,410
IGI | 8.02ct | Cushion | E | VS1 | Ideal
From $3,197
Compare at $3,200
Save 75%IGI | 8.02ct | Cushion | E | VS1 | Ideal
From $5,005
Compare at $19,990
Save 81%IGI | 8.02ct | Cushion | F | VVS2 | Excellent
From $3,423
Compare at $18,020
Save 76.3%IGI | 8.02ct | Cushion | D | VVS2 | Excellent
From $11,480
Compare at $48,410
Save 76.6%IGI | 8.02ct | Cushion | E | VVS2 | Excellent
From $4,732
Compare at $20,190
Entry pricing in this category starts around $1,470.
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 $53,494 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 $5,326 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 182 comparable stones in this segment. Prices start around $1,470 and go up to $54,964.
Based on the latest market data, the average asking price is about $7,667 with a median around $5,326.
The observed spread is roughly $53,494 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 our data, the median price is $5,326, 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 $53,494 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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