3.7 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 3.7 carat marquise lab grown diamonds usually range from $645 to $24,357, with an average price of $4,302.In the last month, prices for these diamonds are up 0.6%.Compare 71 verified listings across 7 retailers tracked by CaratRadar.
3.7 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 71 verified 3.7-carat marquise lab grown diamonds listed across 7 online retailers. Prices in this segment range from $645 to $24,357, with an average asking price of $4,302 and a median of $3,298.
The price spread of $23,712 (97.4% 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.
71 diamonds tracked in this segment
Price range: $645 to $24,357
Average price: $4,302
Median price: $3,298
Available across 7 retailers
Savings potential: up to 97.4%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
71
$645
$4,302
$3,298
$24,357
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 67.8%GIA | 3.71ct | Marquise | E | VS1 | Excellent
From $5,797
Compare at $17,990
Save 67.7%GIA | 3.71ct | Marquise | E | VS1 | Ideal
From $5,669
Compare at $17,550
Save 66%GIA | 3.71ct | Marquise | E | VS1 | Excellent
From $5,973
Compare at $17,550
Save 77.3%IGI | 3.71ct | Marquise | F | VS1 | Excellent
From $1,843
Compare at $8,110
Save 17%IGI | 3.71ct | Marquise | H | VS1 | Ideal
From $915
Compare at $1,103
Save 75.1%IGI | 3.71ct | Marquise | D | VVS2 | Excellent
From $3,226
Compare at $12,960
Save 72.8%IGI | 3.71ct | Marquise | E | VVS1 | Ideal
From $3,655
Compare at $13,440
Save 84.8%IGI | 3.71ct | Marquise | E | VS1 | Very Good
From $1,260
Compare at $8,290
Save 77.2%IGI | 3.71ct | Marquise | E | VS1 | Very Good
From $1,933
Compare at $8,470
Save 76.1%IGI | 3.71ct | Marquise | H | VVS2 | Ideal
From $1,385
Compare at $5,790
Save 85.4%IGI | 3.71ct | Marquise | E | VS1 | Very Good
From $1,263
Compare at $8,670
Save 46.1%IGI | 3.72ct | Marquise | E | IF | Ideal
From $7,436
Compare at $13,787
Save 72.4%IGI | 3.72ct | Marquise | D | VVS2 | Excellent
From $4,064
Compare at $14,730
Save 76%IGI | 3.72ct | Marquise | G | IF | Excellent
From $2,546
Compare at $10,620
Save 12.7%IGI | 3.72ct | Marquise | E | VVS2 | Excellent
From $6,175
Compare at $7,070
Save 68.8%IGI | 3.72ct | Marquise | D | VVS1 | Very Good
From $3,750
Compare at $12,030
Save 72%IGI | 3.72ct | Marquise | F | VVS1 | Very Good
From $2,546
Compare at $9,090
Save 30.6%IGI | 3.72ct | Marquise | E | VVS2 | Ideal
From $6,175
Compare at $8,900
Save 75.2%IGI | 3.72ct | Marquise | F | VVS1 | Excellent
From $2,494
Compare at $10,050
Save 34.2%IGI | 3.73ct | Marquise | E | IF | Ideal
From $8,813
Compare at $13,400
Save 79.5%IGI | 3.73ct | Marquise | E | VS1 | Excellent
From $1,907
Compare at $9,300
Save 64.5%IGI | 3.73ct | Marquise | D | VS1 | Ideal
From $3,196
Compare at $9,010
Save 27.6%IGI | 3.73ct | Marquise | E | VVS2 | Ideal
From $2,444
Compare at $3,376
Save 79.5%IGI | 3.73ct | Marquise | F | VS1 | Excellent
From $1,853
Compare at $9,050
Save 48.6%IGI | 3.73ct | Marquise | E | IF | Very Good
From $7,469
Compare at $14,521
Save 12.5%IGI | 3.73ct | Marquise | E | VVS2 | Excellent
From $6,192
Compare at $7,080
Save 71.3%IGI | 3.73ct | Marquise | E | VVS2 | Ideal
From $2,813
Compare at $9,820
Save 64.4%IGI | 3.73ct | Marquise | F | VS1 | Ideal
From $1,049
Compare at $2,945
Save 74.8%GIA | 3.74ct | Marquise | G | VS1 | Excellent
From $3,728
Compare at $14,810
Save 74.7%IGI | 3.74ct | Marquise | F | VVS2 | Ideal
From $2,023
Compare at $7,990
Save 69%IGI | 3.74ct | Marquise | D | VVS1 | Ideal
From $3,746
Compare at $12,090
Save 84.8%IGI | 3.74ct | Marquise | E | VS1 | Excellent
From $1,275
Compare at $8,410
IGI | 3.75ct | Marquise | F | VS2 | Ideal
From $2,247
Compare at $2,260
Save 72.4%IGI | 3.75ct | Marquise | D | VS1 | Excellent
From $3,213
Compare at $11,640
Save 71.5%IGI | 3.75ct | Marquise | F | VS1 | Ideal
From $2,567
Compare at $8,990
Save 33.3%IGI | 3.75ct | Marquise | E | VVS2 | Ideal
From $5,738
Compare at $8,600
Save 72.7%IGI | 3.75ct | Marquise | D | VS1 | Excellent
From $2,473
Compare at $9,060
Save 65.5%IGI | 3.75ct | Marquise | F | VS2 | Very Good
From $1,448
Compare at $4,200
Save 57.4%IGI | 3.75ct | Marquise | E | VVS1 | Very Good
From $4,435
Compare at $10,410
Save 23%IGI | 3.75ct | Marquise | H | VS1 | Excellent
From $861
Compare at $1,117
IGI | 3.75ct | Marquise | D | VVS2 | Very Good
From $4,106
Compare at $10,440
Save 72.6%IGI | 3.75ct | Marquise | E | VVS2 | Very Good
From $2,480
Compare at $9,060
Save 68.6%GIA | 3.76ct | Marquise | D | VS1 | Excellent
From $7,170
Compare at $22,800
Save 62.8%GIA | 3.76ct | Marquise | H | VVS2 | Ideal
From $3,292
Compare at $8,850
Save 74.9%IGI | 3.76ct | Marquise | F | VVS1 | Ideal
From $2,318
Compare at $9,230
Save 80.5%IGI | 3.76ct | Marquise | E | VS2 | Ideal
From $1,418
Compare at $7,260
Save 31.9%IGI | 3.76ct | Marquise | F | VS2 | Very Good
From $1,063
Compare at $1,562
Save 51%IGI | 3.76ct | Marquise | G | VVS2 | Very Good
From $825
Compare at $1,685
Save 77.7%GCAL | 3.77ct | Marquise | E | VVS2 | Excellent
From $1,821
Compare at $8,160
Save 75.3%IGI | 3.77ct | Marquise | D | VVS1 | Excellent
From $5,676
Compare at $22,970
Entry pricing in this category starts around $645.
What to Know When Shopping for 3.7 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $23,712 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 $3,298 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 71 comparable stones in this segment. Prices start around $645 and go up to $24,357.
Based on the latest market data, the average asking price is about $4,302 with a median around $3,298.
The observed spread is roughly $23,712 across tracked listings, which is about 97.4% 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 $3,298, 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 $23,712 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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