6 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 6 carat marquise lab grown diamonds usually range from $590 to $16,350, with an average price of $4,132.In the last month, prices for these diamonds are up 0.8%.Compare 675 verified listings across 7 retailers tracked by CaratRadar.
6 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 675 verified 6-carat marquise lab grown diamonds listed across 7 online retailers. Prices in this segment range from $590 to $16,350, with an average asking price of $4,132 and a median of $3,037.
The price spread of $15,760 (96.4% 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.
675 diamonds tracked in this segment
Price range: $590 to $16,350
Average price: $4,132
Median price: $3,037
Available across 7 retailers
Savings potential: up to 96.4%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
675
$590
$4,132
$3,037
$16,350
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 61.1%IGI | 6ct | Marquise | F | VS2 | Ideal
From $3,450
Compare at $8,860
Save 76.2%IGI | 6ct | Marquise | G | VVS2 | Very Good
From $1,529
Compare at $6,420
Save 72.4%IGI | 6ct | Marquise | E | VS1 | Ideal
From $3,450
Compare at $12,480
Save 87.7%IGI | 6ct | Marquise | E | VS2 | Ideal
From $1,467
Compare at $11,920
Save 85.3%IGI | 6ct | Marquise | F | VS1 | Ideal
From $1,829
Compare at $12,410
Save 86.9%IGI | 6ct | Marquise | E | VS2 | Ideal
From $1,563
Compare at $11,920
Save 71.5%IGI | 6ct | Marquise | F | VS1 | Ideal
From $2,629
Compare at $9,210
Save 77.1%IGI | 6ct | Marquise | D | VVS2 | Ideal
From $2,162
Compare at $9,450
Save 73%IGI | 6ct | Marquise | E | VS1 | Very Good
From $4,287
Compare at $15,900
Save 74.7%IGI | 6ct | Marquise | F | VVS2 | Ideal
From $1,465
Compare at $5,790
Save 74.7%IGI | 6ct | Marquise | E | VS1 | Ideal
From $1,428
Compare at $5,640
Save 75.5%IGI | 6ct | Marquise | F | VS1 | Ideal
From $1,355
Compare at $5,540
Save 74.7%IGI | 6ct | Marquise | E | VS1 | Ideal
From $1,428
Compare at $5,640
Save 75%IGI | 6ct | Marquise | D | VS2 | Ideal
From $1,392
Compare at $5,570
Save 77.2%IGI | 6ct | Marquise | E | VS1 | Ideal
From $1,931
Compare at $8,460
Save 88.4%IGI | 6ct | Marquise | E | VS2 | Ideal
From $1,373
Compare at $11,860
Save 87.7%IGI | 6ct | Marquise | F | VS2 | Ideal
From $1,300
Compare at $10,580
Save 87.1%IGI | 6ct | Marquise | G | VS2 | Ideal
From $1,260
Compare at $9,740
Save 71.5%IGI | 6ct | Marquise | F | VS2 | Ideal
From $2,473
Compare at $8,670
Save 89.3%IGI | 6ct | Marquise | F | VS1 | Ideal
From $1,318
Compare at $12,340
Save 75.9%IGI | 6ct | Marquise | F | VVS2 | Ideal
From $1,414
Compare at $5,860
Save 75.6%IGI | 6ct | Marquise | G | VS1 | Ideal
From $1,281
Compare at $5,250
Save 75.6%IGI | 6ct | Marquise | F | VS1 | Ideal
From $1,318
Compare at $5,400
Save 75.6%IGI | 6ct | Marquise | F | VS1 | Excellent
From $1,336
Compare at $5,470
Save 88.6%IGI | 6ct | Marquise | E | VS2 | Ideal
From $1,355
Compare at $11,860
Save 87.1%IGI | 6ct | Marquise | G | VS2 | Ideal
From $1,260
Compare at $9,740
Save 75.9%IGI | 6ct | Marquise | F | VVS2 | Ideal
From $1,414
Compare at $5,860
Save 75.6%IGI | 6ct | Marquise | G | VS1 | Ideal
From $1,300
Compare at $5,330
Save 87.2%IGI | 6ct | Marquise | G | VS2 | Ideal
From $1,244
Compare at $9,740
Save 87.2%IGI | 6ct | Marquise | G | VS2 | Ideal
From $1,244
Compare at $9,740
Save 54.1%IGI | 6ct | Marquise | F | VS1 | Very Good
From $1,839
Compare at $4,010
Save 75.9%IGI | 6ct | Marquise | F | VVS2 | Ideal
From $1,414
Compare at $5,860
IGI | 6ct | Marquise | F | VVS2 | Ideal
From $4,358
Compare at $4,675
Save 90.5%IGI | 6ct | Marquise | E | VVS2 | Excellent
From $1,435
Compare at $15,080
Save 77.8%IGI | 6ct | Marquise | F | VS1 | Very Good
From $1,998
Compare at $8,990
Save 86.3%IGI | 6ct | Marquise | E | VS1 | Ideal
From $1,790
Compare at $13,090
Save 77.1%IGI | 6.01ct | Marquise | F | VS2 | Excellent
From $2,059
Compare at $9,010
Save 42.3%IGI | 6.01ct | Marquise | G | VS1 | Very Good
From $4,505
Compare at $7,805
Save 54.1%IGI | 6.01ct | Marquise | F | VS1 | Very Good
From $1,902
Compare at $4,144
Save 30.6%IGI | 6.01ct | Marquise | F | VS1 | Ideal
From $3,892
Compare at $5,610
Save 82.4%IGI | 6.01ct | Marquise | F | SI1 | Excellent
From $1,699
Compare at $9,640
Save 78.4%IGI | 6.01ct | Marquise | H | VS1 | Ideal
From $1,945
Compare at $9,010
Save 84.2%IGI | 6.01ct | Marquise | G | VS1 | Excellent
From $1,531
Compare at $9,710
Save 76.2%IGI | 6.01ct | Marquise | G | VS2 | Excellent
From $1,603
Compare at $6,740
Save 77.9%IGI | 6.01ct | Marquise | E | VS1 | Excellent
From $2,420
Compare at $10,950
Save 30.6%IGI | 6.01ct | Marquise | E | VVS2 | Very Good
From $4,028
Compare at $5,805
Save 81.9%IGI | 6.01ct | Marquise | G | VS2 | Ideal
From $1,773
Compare at $9,820
Save 87.6%IGI | 6.01ct | Marquise | E | VVS2 | Ideal
From $1,876
Compare at $15,150
Save 74.7%IGI | 6.01ct | Marquise | E | VS1 | Ideal
From $1,431
Compare at $5,650
Save 74.7%IGI | 6.01ct | Marquise | E | VS1 | Ideal
From $1,431
Compare at $5,650
Entry pricing in this category starts around $590.
What to Know When Shopping for 6 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $15,760 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 $3,037 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 675 comparable stones in this segment. Prices start around $590 and go up to $16,350.
Based on the latest market data, the average asking price is about $4,132 with a median around $3,037.
The observed spread is roughly $15,760 across tracked listings, which is about 96.4% 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 $3,037, 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 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 $15,760 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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