4 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 4 carat marquise lab grown diamonds usually range from $509 to $14,805, with an average price of $3,409.In the last month, prices for these diamonds are up 0.6%.Compare 651 verified listings across 10 retailers tracked by CaratRadar.
4 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 651 verified 4-carat marquise lab grown diamonds listed across 10 online retailers. Prices in this segment range from $509 to $14,805, with an average asking price of $3,409 and a median of $2,456.
The price spread of $14,295 (96.6% 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.
651 diamonds tracked in this segment
Price range: $509 to $14,805
Average price: $3,409
Median price: $2,456
Available across 10 retailers
Savings potential: up to 96.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
651
$509
$3,409
$2,456
$14,805
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 77.7%GCAL | 4ct | Marquise | E | VVS1 | Excellent
From $2,037
Compare at $9,150
Save 62.3%GIA | 4ct | Marquise | F | VVS2 | Excellent
From $3,264
Compare at $8,660
Save 73.3%IGI | 4ct | Marquise | E | IF | Very Good
From $12,920
Compare at $48,400
Save 76.1%IGI | 4ct | Marquise | G | VVS2 | Excellent
From $1,763
Compare at $7,370
Save 76.6%IGI | 4ct | Marquise | D | VVS1 | Excellent
From $10,197
Compare at $43,670
Save 76.4%IGI | 4ct | Marquise | E | VS1 | Ideal
From $1,896
Compare at $8,040
Save 62.6%IGI | 4ct | Marquise | D | VS1 | Good
From $2,484
Compare at $6,640
Save 79.4%IGI | 4ct | Marquise | D | VS2 | Ideal
From $2,138
Compare at $10,400
Save 65.4%IGI | 4ct | Marquise | D | IF | Good
From $12,123
Compare at $35,000
Save 37.4%IGI | 4ct | Marquise | H | VS2 | Excellent
From $917
Compare at $1,465
Save 73.9%IGI | 4ct | Marquise | G | VS1 | Ideal
From $1,080
Compare at $4,140
IGI | 4ct | Marquise | D | IF | Very Good
From $22,993
Compare at $23,440
IGI | 4ct | Marquise | D | IF | Very Good
From $22,993
Compare at $23,440
Save 83.4%IGI | 4ct | Marquise | F | VVS2 | Excellent
From $1,422
Compare at $8,590
Save 25.6%IGI | 4ct | Marquise | F | VS1 | Very Good
From $1,270
Compare at $1,707
Save 82.6%IGI | 4ct | Marquise | F | VS1 | Ideal
From $895
Compare at $5,130
Save 70.3%IGI | 4ct | Marquise | F | VS2 | Very Good
From $1,257
Compare at $4,240
Save 37.2%IGI | 4ct | Marquise | E | FL | Ideal
From $14,921
Compare at $23,776
Save 82%IGI | 4ct | Marquise | F | VS2 | Very Good
From $1,250
Compare at $6,940
Save 75.3%IGI | 4ct | Marquise | D | VS1 | Very Good
From $1,558
Compare at $6,320
Save 76.4%IGI | 4ct | Marquise | F | VS1 | Very Good
From $1,283
Compare at $5,430
Save 79.1%IGI | 4ct | Marquise | E | VVS2 | Excellent
From $2,356
Compare at $11,290
Save 82.8%IGI | 4ct | Marquise | G | VS1 | Very Good
From $1,167
Compare at $6,780
Save 70.2%IGI | 4ct | Marquise | F | VS1 | Very Good
From $5,071
Compare at $16,996
Save 30.8%IGI | 4ct | Marquise | E | VS1 | Ideal
From $2,108
Compare at $3,048
Save 78.5%IGI | 4ct | Marquise | D | VVS2 | Ideal
From $2,430
Compare at $11,290
Save 83.2%IGI | 4ct | Marquise | E | SI1 | Ideal
From $1,103
Compare at $6,550
Save 79%IGI | 4ct | Marquise | E | VVS1 | Excellent
From $3,928
Compare at $18,716
Save 75.6%IGI | 4ct | Marquise | D | VVS1 | Very Good
From $3,445
Compare at $14,101
Save 78.8%IGI | 4ct | Marquise | E | VVS2 | Excellent
From $2,049
Compare at $9,680
Save 77.2%IGI | 4ct | Marquise | E | VVS2 | Very Good
From $2,049
Compare at $8,970
Save 75.7%IGI | 4ct | Marquise | E | SI1 | Very Good
From $1,597
Compare at $6,560
Save 80.1%IGI | 4ct | Marquise | E | VS2 | Very Good
From $1,323
Compare at $6,650
Save 24.8%IGI | 4ct | Marquise | H | VVS2 | Excellent
From $1,075
Compare at $1,428
Save 40.1%IGI | 4ct | Marquise | E | VS1 | Very Good
From $1,324
Compare at $2,212
Save 88.3%IGI | 4ct | Marquise | F | VS1 | Very Good
From $925
Compare at $7,910
Save 45.2%IGI | 4ct | Marquise | F | VVS2 | Very Good
From $940
Compare at $1,714
Save 28.5%IGI | 4ct | Marquise | D | VVS2 | Excellent
From $2,830
Compare at $3,959
Save 68.9%IGI | 4ct | Marquise | D | VVS2 | Excellent
From $2,830
Compare at $9,100
Save 62.3%IGI | 4ct | Marquise | E | VVS2 | Very Good
From $1,487
Compare at $3,939
Save 71.8%IGI | 4ct | Marquise | E | VS1 | Very Good
From $2,233
Compare at $7,930
Save 79.6%IGI | 4ct | Marquise | E | VVS2 | Excellent
From $1,814
Compare at $8,899
Save 43%IGI | 4ct | Marquise | E | VVS2 | Very Good
From $1,085
Compare at $1,904
Save 77.7%GCAL | 4.01ct | Marquise | F | VS1 | Excellent
From $1,797
Compare at $8,060
Save 77.7%GCAL | 4.01ct | Marquise | F | VS1 | Excellent
From $1,797
Compare at $8,060
Save 77.7%GCAL | 4.01ct | Marquise | E | VVS2 | Ideal
From $1,978
Compare at $8,860
Save 82.8%GIA | 4.01ct | Marquise | D | VS1 | Excellent
From $4,495
Compare at $26,090
Save 73%GIA | 4.01ct | Marquise | F | VS1 | Excellent
From $4,432
Compare at $16,440
Save 74.6%GIA | 4.01ct | Marquise | E | VS1 | Excellent
From $10,429
Compare at $41,040
Save 74.8%GIA | 4.01ct | Marquise | G | VS2 | Ideal
From $3,703
Compare at $14,710
Entry pricing in this category starts around $509.
What to Know When Shopping for 4 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $14,295 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 $2,456 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 651 comparable stones in this segment. Prices start around $509 and go up to $14,805.
Based on the latest market data, the average asking price is about $3,409 with a median around $2,456.
The observed spread is roughly $14,295 across tracked listings, which is about 96.6% 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 $2,456, 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 10 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 $14,295 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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