8 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 8 carat marquise lab grown diamonds usually range from $765 to $21,896, with an average price of $4,948.In the last month, prices for these diamonds are down 3.9%.Compare 51 verified listings across 7 retailers tracked by CaratRadar.
8 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 51 verified 8-carat marquise lab grown diamonds listed across 7 online retailers. Prices in this segment range from $765 to $21,896, with an average asking price of $4,948 and a median of $3,675.
The price spread of $21,131 (96.5% 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.
51 diamonds tracked in this segment
Price range: $765 to $21,896
Average price: $4,948
Median price: $3,675
Available across 7 retailers
Savings potential: up to 96.5%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
51
$765
$4,948
$3,675
$21,896
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 75.9%IGI | 8.01ct | Marquise | F | VVS2 | Ideal
From $1,255
Compare at $5,217
Save 74.7%IGI | 8ct | Marquise | F | VS1 | Ideal
From $1,355
Compare at $5,353
Save 66.5%IGI | 8.04ct | Marquise | E | VS1 | Very Good
From $1,393
Compare at $4,157
Save 71.9%IGI | 8.04ct | Marquise | G | VS1 | Excellent
From $1,445
Compare at $5,139
Save 26%IGI | 8ct | Marquise | F | VS1 | Very Good
From $1,450
Compare at $1,959
Save 72.4%IGI | 8.07ct | Marquise | F | VVS2 | Very Good
From $1,474
Compare at $5,336
Save 62.1%IGI | 8.03ct | Marquise | F | VS1 | Very Good
From $1,625
Compare at $4,284
Save 62.1%IGI | 8.04ct | Marquise | F | VS1 | Very Good
From $1,627
Compare at $4,295
Save 26.8%IGI | 8ct | Marquise | F | VVS2 | Very Good
From $1,628
Compare at $2,224
Save 60.9%IGI | 8.02ct | Marquise | F | VVS2 | Very Good
From $1,634
Compare at $4,182
Save 60.2%IGI | 8.04ct | Marquise | F | VVS2 | Very Good
From $1,671
Compare at $4,202
Save 62.1%IGI | 8ct | Marquise | E | VVS2 | Very Good
From $1,677
Compare at $4,424
Save 68.4%IGI | 8ct | Marquise | F | VVS2 | Excellent
From $1,681
Compare at $5,314
Save 68.4%IGI | 8.01ct | Marquise | F | VVS2 | Very Good
From $1,682
Compare at $5,315
Save 68.4%IGI | 8.01ct | Marquise | F | VVS2 | Excellent
From $1,683
Compare at $5,327
Save 68.4%IGI | 8.01ct | Marquise | F | VVS2 | Excellent
From $1,683
Compare at $5,327
Save 68.5%IGI | 8.04ct | Marquise | F | VVS2 | Excellent
From $1,689
Compare at $5,366
Save 68.5%IGI | 8.04ct | Marquise | F | VVS2 | Very Good
From $1,689
Compare at $5,366
Save 62.4%IGI | 8.06ct | Marquise | E | VVS2 | Very Good
From $1,690
Compare at $4,489
Save 68.7%IGI | 8.09ct | Marquise | F | VVS2 | Very Good
From $1,700
Compare at $5,429
Save 72.2%IGI | 8.05ct | Marquise | G | VVS2 | Very Good
From $1,726
Compare at $6,202
Save 57.7%IGI | 8.07ct | Marquise | F | VS1 | Very Good
From $1,884
Compare at $4,455
Save 72.9%IGI | 8ct | Marquise | FANCY | VS1 | Very Good
From $2,177
Compare at $8,022
Save 58.7%IGI | 8.05ct | Marquise | F | VVS2 | Very Good
From $2,227
Compare at $5,386
Save 58.3%IGI | 8.09ct | Marquise | F | VVS2 | Ideal
From $2,261
Compare at $5,425
Save 69.4%IGI | 8.09ct | Marquise | E | VVS2 | Very Good
From $2,286
Compare at $7,469
Save 55.4%IGI | 8.01ct | Marquise | F | VS1 | Very Good
From $2,447
Compare at $5,484
Save 58.3%IGI | 8.01ct | Marquise | E | VVS2 | Very Good
From $2,478
Compare at $5,941
Save 57.9%IGI | 8.02ct | Marquise | E | VVS2 | Very Good
From $2,505
Compare at $5,955
Save 48.8%IGI | 8.07ct | Marquise | E | VVS2 | Very Good
From $3,237
Compare at $6,325
Save 46.5%IGI | 8.03ct | Marquise | E | VVS2 | Very Good
From $3,651
Compare at $6,831
Save 77%IGI | 8.07ct | Marquise | F | VVS2 | Ideal
From $4,202
Compare at $18,230
Save 71.8%IGI | 8.01ct | Marquise | FANCY | VS1 | Very Good
From $4,560
Compare at $16,193
Save 34.9%IGI | 8.05ct | Marquise | F | VVS2 | Ideal
From $5,291
Compare at $8,130
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.6%IGI | 8.05ct | Marquise | E | VS1 | Ideal
From $5,298
Compare at $8,360
Save 36.4%IGI | 8.08ct | Marquise | E | VS1 | Ideal
From $5,335
Compare at $8,390
Save 34.6%IGI | 8.09ct | Marquise | F | VVS2 | Ideal
From $5,342
Compare at $8,170
Save 36.3%IGI | 8.09ct | Marquise | E | VS1 | Ideal
From $5,349
Compare at $8,400
Save 35.5%IGI | 8.05ct | Marquise | E | VVS2 | Ideal
From $5,647
Compare at $8,750
Save 35.4%IGI | 8.06ct | Marquise | E | VVS2 | Ideal
From $5,660
Compare at $8,760
Save 35.3%IGI | 8.07ct | Marquise | E | VVS2 | Ideal
From $5,674
Compare at $8,770
Save 67.6%IGI | 8.02ct | Marquise | FANCY | VS1 | Excellent
From $6,310
Compare at $19,456
Save 78%IGI | 8.04ct | Marquise | F | VVS1 | Very Good
From $6,347
Compare at $28,878
Save 73.6%IGI | 8.09ct | Marquise | E | VVS1 | Very Good
From $10,190
Compare at $38,599
Entry pricing in this category starts around $765.
What to Know When Shopping for 8 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,131 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 $3,675 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.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 51 comparable stones in this segment. Prices start around $765 and go up to $21,896.
Based on the latest market data, the average asking price is about $4,948 with a median around $3,675.
The observed spread is roughly $21,131 across tracked listings, which is about 96.5% 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 $4,948. The median price is $3,675, 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 7 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 $21,131 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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