3.7 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 3.7 carat marquise lab grown diamonds usually range from $858 to $13,480, with an average price of $3,167.In the last month, prices for these diamonds are down 2.8%.Compare 90 verified listings across 8 retailers tracked by CaratRadar.
3.7 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 90 verified 3.7-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $858 to $13,480, with an average asking price of $3,167 and a median of $2,166.
The price spread of $12,622 (93.6% 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.
90 diamonds tracked in this segment
Price range: $858 to $13,480
Average price: $3,167
Median price: $2,166
Available across 8 retailers
Savings potential: up to 93.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
90
$858
$3,167
$2,166
$13,480
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 15.3%3.65ct | Marquise | F | VS1 | Very Good
From $880
Compare at $1,039
IGISave 48.1%3.65ct | Marquise | H | VVS2 | Ideal
From $863
Compare at $1,665
IGISave 82.5%3.65ct | Marquise | F | VS1 | Ideal
From $858
Compare at $4,900
IGISave 25%3.65ct | Marquise | E | VVS2 | Ideal
From $5,670
Compare at $7,556
IGISave 80.8%3.66ct | Marquise | F | VVS2 | Ideal
From $1,678
Compare at $8,760
IGI3.66ct | Marquise | E | VVS2 | Ideal
From $7,576
Compare at $8,390
IGISave 62.5%3.66ct | Marquise | F | VVS2 | Very Good
From $955
Compare at $2,546
IGISave 81.5%3.66ct | Marquise | E | VVS2 | Very Good
From $1,623
Compare at $8,750
IGISave 71.8%3.66ct | Marquise | D | VVS2 | Excellent
From $4,094
Compare at $14,500
IGISave 81.5%3.67ct | Marquise | E | VVS2 | Very Good
From $1,627
Compare at $8,780
IGISave 72.4%3.67ct | Marquise | E | VVS1 | Ideal
From $2,839
Compare at $10,280
IGISave 50.9%3.67ct | Marquise | D | IF | Ideal
From $8,615
Compare at $17,540
IGISave 39.6%3.67ct | Marquise | D | IF | Ideal
From $10,586
Compare at $17,540
IGISave 53%3.67ct | Marquise | D | VVS1 | Ideal
From $3,172
Compare at $6,750
IGISave 85.8%3.67ct | Marquise | D | VS1 | Excellent
From $1,508
Compare at $10,630
IGISave 66.7%3.67ct | Marquise | D | VVS1 | Very Good
From $3,954
Compare at $11,870
IGISave 51.4%3.67ct | Marquise | E | IF | Very Good
From $8,544
Compare at $17,588
IGISave 12.9%3.67ct | Marquise | E | VVS2 | Excellent
From $6,970
Compare at $8,001
IGISave 86.3%3.67ct | Marquise | F | VVS2 | Very Good
From $1,060
Compare at $7,730
IGISave 78.8%3.67ct | Marquise | F | VS1 | Very Good
From $994
Compare at $4,690
IGISave 56.5%3.67ct | Marquise | F | VVS1 | Ideal
From $3,035
Compare at $6,981
IGISave 59.1%3.67ct | Marquise | D | VVS1 | Ideal
From $4,835
Compare at $11,820
IGISave 73.3%3.67ct | Marquise | D | VVS1 | Ideal
From $3,172
Compare at $11,870
IGISave 56%3.68ct | Marquise | FANCY | VS1 | Ideal
From $3,928
Compare at $8,920
IGISave 82.9%3.68ct | Marquise | E | VVS2 | Ideal
From $1,584
Compare at $9,238
GIASave 46.1%3.68ct | Marquise | D | VVS2 | Excellent
From $4,426
Compare at $8,218
IGISave 74.6%3.69ct | Marquise | G | VS1 | Very Good
From $1,208
Compare at $4,750
IGISave 77.6%3.69ct | Marquise | E | VS1 | Ideal
From $1,313
Compare at $5,860
GIASave 83.1%3.69ct | Marquise | D | VVS1 | Excellent
From $7,001
Compare at $41,420
IGISave 48.2%3.69ct | Marquise | H | VVS2 | Ideal
From $873
Compare at $1,684
IGISave 47.3%3.69ct | Marquise | FANCY | VVS2 | Very Good
From $2,583
Compare at $4,900
IGISave 66.3%3.7ct | Marquise | G | VS1 | Very Good
From $880
Compare at $2,614
IGISave 76%3.7ct | Marquise | D | VVS2 | Ideal
From $2,486
Compare at $10,350
IGISave 78.4%3.7ct | Marquise | E | VVS2 | Ideal
From $2,211
Compare at $10,220
IGISave 72.4%3.7ct | Marquise | D | VVS2 | Ideal
From $3,315
Compare at $12,010
IGISave 81.4%3.7ct | Marquise | E | VVS2 | Ideal
From $2,173
Compare at $11,660
IGISave 71.1%3.7ct | Marquise | D | VVS1 | Ideal
From $3,457
Compare at $11,970
IGISave 87.3%3.7ct | Marquise | E | VS2 | Ideal
From $904
Compare at $7,110
IGISave 75.7%3.7ct | Marquise | F | VS2 | Very Good
From $1,007
Compare at $4,140
IGISave 69.2%3.7ct | Marquise | D | VVS1 | Ideal
From $3,688
Compare at $11,970
IGISave 77.1%3.7ct | Marquise | E | VVS2 | Excellent
From $2,158
Compare at $9,440
IGISave 85.5%3.7ct | Marquise | E | VS2 | Ideal
From $1,032
Compare at $7,130
IGISave 86.7%3.7ct | Marquise | E | VVS2 | Excellent
From $1,188
Compare at $8,940
IGISave 88.3%3.7ct | Marquise | E | VS1 | Ideal
From $1,016
Compare at $8,650
IGISave 87%3.7ct | Marquise | F | VVS2 | Ideal
From $1,012
Compare at $7,790
IGI3.7ct | Marquise | E | VVS2 | Excellent
From $7,030
Compare at $7,659
IGISave 39.5%3.7ct | Marquise | D | IF | Very Good
From $10,672
Compare at $17,630
IGISave 84.3%3.7ct | Marquise | E | VVS2 | Ideal
From $1,404
Compare at $8,920
GIASave 74.4%3.7ct | Marquise | E | VVS1 | Very Good
From $5,019
Compare at $19,578
GIASave 74%3.7ct | Marquise | D | VVS2 | Excellent
From $3,856
Compare at $14,803
Entry pricing in this category starts around $858.
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 $12,622 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 $2,166 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 90 comparable stones in this segment. Prices start around $858 and go up to $13,480.
Based on the latest market data, the average asking price is about $3,167 with a median around $2,166.
The observed spread is roughly $12,622 across tracked listings, which is about 93.6% 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 $2,166, 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 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 $12,622 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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