6 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 6 carat marquise lab grown diamonds usually range from $590 to $16,270, with an average price of $3,960.In the last month, prices for these diamonds are down 2.2%.Compare 104 verified listings across 8 retailers tracked by CaratRadar.
6 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 104 verified 6-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $590 to $16,270, with an average asking price of $3,960 and a median of $2,942.
The price spread of $15,680 (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.
104 diamonds tracked in this segment
Price range: $590 to $16,270
Average price: $3,960
Median price: $2,942
Available across 8 retailers
Savings potential: up to 96.4%
Price Range Overview
As of May 31, 2026Real market range for this carat, shape, and diamond type.
104
$590
$3,960
$2,942
$16,270
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%IGI | 6.04ct | Marquise | G | VS2 | Ideal
From $774
Compare at $2,760
Save 74.3%IGI | 6.03ct | Marquise | F | VS1 | Ideal
From $785
Compare at $3,050
Save 74.3%IGI | 6.04ct | Marquise | F | VS1 | Ideal
From $786
Compare at $3,061
Save 74.3%IGI | 6.04ct | Marquise | F | VS1 | Ideal
From $786
Compare at $3,061
Save 74.3%IGI | 6.04ct | Marquise | F | VS1 | Ideal
From $786
Compare at $3,061
Save 74.3%IGI | 6.05ct | Marquise | F | VS1 | Ideal
From $788
Compare at $3,070
Save 74.3%IGI | 6.05ct | Marquise | F | VS1 | Ideal
From $788
Compare at $3,070
Save 50.8%IGI | 6.08ct | Marquise | G | VS1 | Ideal
From $790
Compare at $1,606
Save 74.5%IGI | 6.09ct | Marquise | F | VS1 | Ideal
From $793
Compare at $3,110
Save 73.8%IGI | 6ct | Marquise | F | VS1 | Ideal
From $794
Compare at $3,025
Save 73.8%IGI | 6ct | Marquise | F | VS1 | Ideal
From $794
Compare at $3,025
Save 73.9%IGI | 6.04ct | Marquise | F | VS1 | Ideal
From $799
Compare at $3,063
Save 73.9%IGI | 6.05ct | Marquise | F | VS1 | Ideal
From $801
Compare at $3,073
Save 73.9%IGI | 6.05ct | Marquise | F | VS1 | Ideal
From $801
Compare at $3,073
Save 74%IGI | 6.06ct | Marquise | F | VS1 | Ideal
From $802
Compare at $3,083
Save 66.1%IGI | 6ct | Marquise | F | VS1 | Ideal
From $804
Compare at $2,375
Save 64.8%IGI | 6.01ct | Marquise | E | VS1 | Ideal
From $818
Compare at $2,327
Save 73.1%IGI | 6.03ct | Marquise | F | VS1 | Ideal
From $821
Compare at $3,050
Save 73.2%IGI | 6.05ct | Marquise | F | VS1 | Ideal
From $824
Compare at $3,070
IGI | 6.05ct | Marquise | E | VS2 | Excellent
From $835
Compare at $3,316
Save 72.2%IGI | 6.02ct | Marquise | F | VS1 | Ideal
From $846
Compare at $3,041
Save 71.1%IGI | 6.04ct | Marquise | H | VS1 | Ideal
From $917
Compare at $3,176
Save 13.6%IGI | 6.02ct | Marquise | E | VS1 | Ideal
From $941
Compare at $1,089
Save 13.7%IGI | 6.03ct | Marquise | E | VS1 | Ideal
From $942
Compare at $1,091
Save 43.7%IGI | 6.04ct | Marquise | E | VS2 | Ideal
From $1,033
Compare at $1,834
Save 51.2%IGI | 6ct | Marquise | G | VS1 | Ideal
From $1,119
Compare at $2,294
Save 74%IGI | 6.03ct | Marquise | F | VS1 | Ideal
From $1,183
Compare at $4,556
Save 73.6%IGI | 6.06ct | Marquise | F | VS1 | Ideal
From $1,209
Compare at $4,577
Save 66.1%IGI | 6.04ct | Marquise | F | VS1 | Ideal
From $1,229
Compare at $3,626
Save 57.3%IGI | 6.02ct | Marquise | G | VS2 | Ideal
From $1,238
Compare at $2,896
Save 74.4%IGI | 6.06ct | Marquise | E | VS1 | Ideal
From $1,240
Compare at $4,848
Save 57.4%IGI | 6.04ct | Marquise | G | VS2 | Ideal
From $1,241
Compare at $2,914
Save 61.6%IGI | 6.09ct | Marquise | F | VS1 | Ideal
From $1,251
Compare at $3,261
Save 49.9%IGI | 6.08ct | Marquise | F | VS1 | Excellent
From $1,260
Compare at $2,514
Save 71.6%IGI | 6.03ct | Marquise | G | VVS2 | Ideal
From $1,260
Compare at $4,437
Save 63.1%IGI | 6.02ct | Marquise | G | VVS2 | Good
From $1,270
Compare at $3,439
Save 48.4%IGI | 6.08ct | Marquise | F | VS1 | Very Good
From $1,294
Compare at $2,507
Save 58.1%IGI | 6.03ct | Marquise | F | VVS2 | Very Good
From $1,305
Compare at $3,113
Save 58.1%IGI | 6.03ct | Marquise | F | VS1 | Ideal
From $1,327
Compare at $3,168
Save 50.4%IGI | 6.01ct | Marquise | H | VS2 | Excellent
From $1,335
Compare at $2,693
Save 69.6%IGI | 6.03ct | Marquise | F | VS2 | Ideal
From $1,340
Compare at $4,410
Save 66%IGI | 6.02ct | Marquise | G | VS2 | Ideal
From $1,342
Compare at $3,943
Save 59.3%IGI | 6.02ct | Marquise | E | VVS2 | Ideal
From $1,360
Compare at $3,340
Save 57%IGI | 6.03ct | Marquise | F | VS1 | Ideal
From $1,366
Compare at $3,176
Save 57.4%IGI | 6.08ct | Marquise | F | VS1 | Very Good
From $1,374
Compare at $3,225
Save 56.5%IGI | 6.01ct | Marquise | F | VS1 | Very Good
From $1,383
Compare at $3,178
Save 54.9%IGI | 6ct | Marquise | F | VVS2 | Excellent
From $1,392
Compare at $3,088
Save 72.6%IGI | 6.04ct | Marquise | E | VS1 | Very Good
From $1,407
Compare at $5,128
Save 63.6%IGI | 6.08ct | Marquise | F | VVS2 | Very Good
From $1,411
Compare at $3,872
Save 55.6%IGI | 6.01ct | Marquise | F | VS1 | Very Good
From $1,414
Compare at $3,187
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 $15,680 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 $2,942 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 104 comparable stones in this segment. Prices start around $590 and go up to $16,270.
Based on the latest market data, the average asking price is about $3,960 with a median around $2,942.
The observed spread is roughly $15,680 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 completed market data, the fair market benchmark is $3,960. The median price is $2,942, 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 $15,680 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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