3.1 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 3.1 carat marquise lab grown diamonds usually range from $479 to $11,565, with an average price of $2,285.In the last month, prices for these diamonds are down 0.7%.Compare 66 verified listings across 6 retailers tracked by CaratRadar.
3.1 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 66 verified 3.1-carat marquise lab grown diamonds listed across 6 online retailers. Prices in this segment range from $479 to $11,565, with an average asking price of $2,285 and a median of $1,492.
The price spread of $11,086 (95.9% 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.
66 diamonds tracked in this segment
Price range: $479 to $11,565
Average price: $2,285
Median price: $1,492
Available across 6 retailers
Savings potential: up to 95.9%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
66
$479
$2,285
$1,492
$11,565
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 64.6%IGI | 3.17ct | Marquise | G | VS1 | Excellent
From $497
Compare at $1,405
Save 46.5%IGI | 3.19ct | Marquise | G | VVS2 | Ideal
From $625
Compare at $1,169
IGI | 3.13ct | Marquise | G | VS1 | Excellent
From $640
Compare at $1,372
IGI | 3.18ct | Marquise | F | VVS2 | Excellent
From $646
Compare at $3,115
Save 53.9%IGI | 3.17ct | Marquise | G | VS1 | Excellent
From $648
Compare at $1,405
Save 73.3%IGI | 3.16ct | Marquise | E | VS1 | Excellent
From $699
Compare at $2,620
Save 73.3%IGI | 3.2ct | Marquise | E | VS1 | Ideal
From $708
Compare at $2,655
Save 79.1%IGI | 3.11ct | Marquise | E | VVS2 | Ideal
From $715
Compare at $3,420
Save 56.7%IGI | 3.14ct | Marquise | E | VS1 | Excellent
From $717
Compare at $1,656
Save 59.5%IGI | 3.14ct | Marquise | E | VVS2 | Ideal
From $722
Compare at $1,781
Save 78.1%IGI | 3.13ct | Marquise | E | VVS2 | Excellent
From $727
Compare at $3,315
Save 78.1%IGI | 3.14ct | Marquise | E | VVS2 | Excellent
From $729
Compare at $3,325
Save 54.8%IGI | 3.15ct | Marquise | E | VS1 | Very Good
From $753
Compare at $1,667
Save 54.8%IGI | 3.15ct | Marquise | E | VS1 | Excellent
From $753
Compare at $1,665
Save 72.4%IGI | 3.12ct | Marquise | FANCY | VS1 | Very Good
From $767
Compare at $2,775
IGI | 3.2ct | Marquise | E | VS1 | Excellent
From $792
Compare at $1,644
Save 57.2%IGI | 3.2ct | Marquise | E | VVS2 | Very Good
From $821
Compare at $1,918
Save 54%IGI | 3.14ct | Marquise | E | VVS2 | Excellent
From $822
Compare at $1,788
IGI | 3.15ct | Marquise | F | VVS2 | Excellent
From $833
Compare at $1,639
Save 48.2%IGI | 3.2ct | Marquise | F | VS1 | Excellent
From $846
Compare at $1,632
Save 47.5%IGI | 3.14ct | Marquise | F | VVS2 | Excellent
From $858
Compare at $1,633
Save 48.9%IGI | 3.2ct | Marquise | F | VVS2 | Excellent
From $864
Compare at $1,692
Save 39.5%IGI | 3.14ct | Marquise | G | VVS2 | Very Good
From $867
Compare at $1,433
Save 50.5%IGI | 3.16ct | Marquise | E | VVS2 | Very Good
From $905
Compare at $1,827
Save 79.4%IGI | 3.2ct | Marquise | E | VS1 | Excellent
From $919
Compare at $4,470
Save 73.3%IGI | 3.11ct | Marquise | G | VS1 | Ideal
From $921
Compare at $3,450
Save 77.2%IGI | 3.12ct | Marquise | F | VS2 | Excellent
From $928
Compare at $4,070
Save 50.4%IGI | 3.13ct | Marquise | E | VVS2 | Ideal
From $949
Compare at $1,915
Save 49.9%IGI | 3.13ct | Marquise | D | VS1 | Very Good
From $953
Compare at $1,902
Save 76.1%IGI | 3.15ct | Marquise | G | VVS2 | Ideal
From $966
Compare at $4,040
Save 78.3%IGI | 3.19ct | Marquise | H | VS1 | Ideal
From $983
Compare at $4,520
Save 79.1%IGI | 3.16ct | Marquise | E | SI1 | Excellent
From $1,091
Compare at $5,210
Save 25.8%IGI | 3.2ct | Marquise | E | VVS2 | Ideal
From $1,094
Compare at $1,474
Save 47.6%IGI | 3.14ct | Marquise | D | VVS2 | Very Good
From $1,130
Compare at $2,155
Save 54.6%IGI | 3.12ct | Marquise | E | VVS1 | Very Good
From $1,218
Compare at $2,683
Save 68.8%IGI | 3.12ct | Marquise | F | VS1 | Excellent
From $1,241
Compare at $3,980
Save 42.9%IGI | 3.18ct | Marquise | E | VVS2 | Excellent
From $1,284
Compare at $2,248
Save 45.1%IGI | 3.2ct | Marquise | D | VVS2 | Very Good
From $1,350
Compare at $2,457
Save 52%IGI | 3.2ct | Marquise | E | VVS1 | Very Good
From $1,351
Compare at $2,812
Save 74.4%IGI | 3.19ct | Marquise | E | VVS2 | Ideal
From $1,398
Compare at $5,470
Save 76.2%IGI | 3.18ct | Marquise | F | VVS2 | Excellent
From $1,442
Compare at $6,060
Save 74.6%IGI | 3.2ct | Marquise | F | VVS2 | Ideal
From $1,485
Compare at $5,845
Save 72.3%IGI | 3.11ct | Marquise | F | VVS2 | Very Good
From $1,575
Compare at $5,691
IGI | 3.2ct | Marquise | F | VVS2 | Very Good
From $1,929
Compare at $2,093
Save 69.7%IGI | 3.2ct | Marquise | FANCY | VS1 | Very Good
From $1,959
Compare at $6,469
Save 68%IGI | 3.12ct | Marquise | FANCY | VS2 | Very Good
From $1,972
Compare at $6,156
Save 43.6%IGI | 3.2ct | Marquise | D | VVS1 | Very Good
From $1,992
Compare at $3,530
Save 68%IGI | 3.19ct | Marquise | FANCY | VS2 | Very Good
From $2,016
Compare at $6,294
Save 80%IGI | 3.11ct | Marquise | D | VVS1 | Ideal
From $2,027
Compare at $10,130
Save 44.7%GIA | 3.2ct | Marquise | D | VVS2 | Excellent
From $2,283
Compare at $4,128
Entry pricing in this category starts around $479.
What to Know When Shopping for 3.1 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $11,086 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 $1,492 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 66 comparable stones in this segment. Prices start around $479 and go up to $11,565.
Based on the latest market data, the average asking price is about $2,285 with a median around $1,492.
The observed spread is roughly $11,086 across tracked listings, which is about 95.9% 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 $2,285. The median price is $1,492, 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 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 $11,086 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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