3.7 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 3.7 carat marquise lab grown diamonds usually range from $539 to $21,997, with an average price of $3,602.In the last month, prices for these diamonds are down 10.8%.Compare 53 verified listings across 7 retailers tracked by CaratRadar.
3.7 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 53 verified 3.7-carat marquise lab grown diamonds listed across 7 online retailers. Prices in this segment range from $539 to $21,997, with an average asking price of $3,602 and a median of $2,457.
The price spread of $21,458 (97.5% 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.
53 diamonds tracked in this segment
Price range: $539 to $21,997
Average price: $3,602
Median price: $2,457
Available across 7 retailers
Savings potential: up to 97.5%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
53
$539
$3,602
$2,457
$21,997
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 22%IGI | 3.76ct | Marquise | H | VS1 | Very Good
From $547
Compare at $701
Save 72.9%IGI | 3.76ct | Marquise | F | VS2 | Very Good
From $729
Compare at $2,688
Save 44.1%IGI | 3.74ct | Marquise | F | VS1 | Very Good
From $749
Compare at $1,341
Save 65%IGI | 3.71ct | Marquise | E | VVS2 | Very Good
From $803
Compare at $2,292
IGI | 3.78ct | Marquise | E | VS1 | Excellent
From $822
Compare at $2,216
Save 58.6%IGI | 3.76ct | Marquise | G | VVS2 | Very Good
From $832
Compare at $2,012
Save 79%IGI | 3.73ct | Marquise | E | VVS2 | Excellent
From $860
Compare at $4,100
Save 79.2%IGI | 3.77ct | Marquise | E | VVS2 | Ideal
From $861
Compare at $4,145
Save 79.2%IGI | 3.77ct | Marquise | E | VVS2 | Ideal
From $861
Compare at $4,145
Save 62.1%IGI | 3.79ct | Marquise | F | VVS2 | Very Good
From $906
Compare at $2,392
Save 59.7%IGI | 3.73ct | Marquise | E | VVS2 | Excellent
From $935
Compare at $2,319
Save 74.3%IGI | 3.73ct | Marquise | F | VVS2 | Excellent
From $975
Compare at $3,800
Save 66.5%IGI | 3.73ct | Marquise | F | VVS2 | Very Good
From $991
Compare at $2,959
Save 53.3%IGI | 3.71ct | Marquise | E | VVS2 | Very Good
From $1,089
Compare at $2,333
Save 53.6%IGI | 3.72ct | Marquise | E | VVS2 | Very Good
From $1,105
Compare at $2,381
IGI | 3.75ct | Marquise | F | VS1 | Very Good
From $1,107
Compare at $5,310
Save 51.2%IGI | 3.79ct | Marquise | E | VS1 | Very Good
From $1,112
Compare at $2,280
Save 72.4%IGI | 3.75ct | Marquise | FANCY | VVS2 | Very Good
From $1,114
Compare at $4,033
Save 54.4%IGI | 3.71ct | Marquise | D | VS1 | Very Good
From $1,144
Compare at $2,508
Save 50.5%IGI | 3.74ct | Marquise | E | VVS2 | Very Good
From $1,188
Compare at $2,402
Save 79.3%IGI | 3.75ct | Marquise | G | VS1 | Ideal
From $1,205
Compare at $5,830
Save 56.5%IGI | 3.77ct | Marquise | D | VVS2 | Excellent
From $1,250
Compare at $2,875
Save 50.4%IGI | 3.74ct | Marquise | D | VS1 | Very Good
From $1,266
Compare at $2,550
Save 76.1%IGI | 3.79ct | Marquise | F | VS1 | Excellent
From $1,295
Compare at $5,420
Save 70.3%IGI | 3.73ct | Marquise | F | VS1 | Ideal
From $1,413
Compare at $4,760
Save 65.5%IGI | 3.75ct | Marquise | F | VS2 | Very Good
From $1,448
Compare at $4,200
Save 72.9%IGI | 3.71ct | Marquise | FANCY | VVS2 | Very Good
From $1,628
Compare at $6,000
Save 72.9%IGI | 3.75ct | Marquise | FANCY | VS1 | Very Good
From $1,646
Compare at $6,065
Save 79.4%GCAL | 3.77ct | Marquise | F | VS1 | Excellent
From $1,933
Compare at $9,400
Save 78%IGI | 3.73ct | Marquise | D | VS1 | Ideal
From $1,982
Compare at $9,010
IGI | 3.75ct | Marquise | F | VS2 | Ideal
From $2,203
Compare at $2,398
Save 78.3%IGI | 3.72ct | Marquise | D | VVS2 | Very Good
From $2,249
Compare at $10,360
Save 78.2%IGI | 3.77ct | Marquise | D | VVS2 | Very Good
From $2,284
Compare at $10,500
Save 79.7%IGI | 3.75ct | Marquise | D | VS1 | Excellent
From $2,357
Compare at $11,610
Save 77%IGI | 3.75ct | Marquise | D | VVS2 | Very Good
From $2,399
Compare at $10,440
Save 77%IGI | 3.75ct | Marquise | D | VVS2 | Very Good
From $2,399
Compare at $10,440
Save 71.5%IGI | 3.75ct | Marquise | F | VS1 | Ideal
From $2,567
Compare at $8,990
Save 78.9%IGI | 3.77ct | Marquise | D | VVS1 | Ideal
From $2,571
Compare at $12,190
Save 75.1%IGI | 3.75ct | Marquise | E | VVS1 | Very Good
From $2,592
Compare at $10,410
Save 70.3%IGI | 3.77ct | Marquise | E | VVS1 | Ideal
From $3,198
Compare at $10,760
Save 69%IGI | 3.74ct | Marquise | E | VVS1 | Very Good
From $3,278
Compare at $10,560
Save 70.5%IGI | 3.72ct | Marquise | D | VVS1 | Very Good
From $3,533
Compare at $11,990
Save 70.8%IGI | 3.72ct | Marquise | D | VVS1 | Very Good
From $3,533
Compare at $12,110
Save 57.7%GIA | 3.79ct | Marquise | D | VVS2 | Excellent
From $3,684
Compare at $8,712
Save 11.7%IGI | 3.71ct | Marquise | E | VVS1 | Ideal
From $4,435
Compare at $5,022
Save 62.6%IGI | 3.73ct | Marquise | E | IF | Very Good
From $5,010
Compare at $13,400
Save 62.3%IGI | 3.72ct | Marquise | E | IF | Ideal
From $5,036
Compare at $13,360
Save 69.6%GIA | 3.71ct | Marquise | E | VS1 | Excellent
From $5,342
Compare at $17,550
Save 20%IGI | 3.76ct | Marquise | E | VVS2 | Excellent
From $5,715
Compare at $7,140
Save 16.2%IGI | 3.73ct | Marquise | E | VVS2 | Excellent
From $5,931
Compare at $7,080
Entry pricing in this category starts around $539.
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 $21,458 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 $2,457 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 53 comparable stones in this segment. Prices start around $539 and go up to $21,997.
Based on the latest market data, the average asking price is about $3,602 with a median around $2,457.
The observed spread is roughly $21,458 across tracked listings, which is about 97.5% 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 $3,602. The median price is $2,457, 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 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 $21,458 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
3.6 Carat Marquise Lab Grown Diamond Prices
3.8 Carat Marquise Lab Grown Diamond Prices
3.5 Carat Marquise Lab Grown Diamond Prices
3.9 Carat Marquise Lab Grown Diamond Prices
3.4 Carat Marquise Lab Grown Diamond Prices
4 Carat Marquise Lab Grown Diamond Prices
3.3 Carat Marquise Lab Grown Diamond Prices
3.7 Carat Round Lab Grown Diamond Prices
3.7 Carat Oval Lab Grown Diamond Prices
3.7 Carat Radiant Lab Grown Diamond Prices
3.7 Carat Cushion Lab Grown Diamond Prices
3.7 Carat Emerald Lab Grown Diamond Prices
Tracking Lab Grown inventory for 3.7 carat Marquise diamonds.