4 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 4 carat marquise lab grown diamonds usually range from $800 to $23,108, with an average price of $2,371.In the last month, prices for these diamonds are down 1.5%.Compare 460 verified listings across 12 retailers tracked by CaratRadar.
4 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 460 verified 4-carat marquise lab grown diamonds listed across 12 online retailers. Prices in this segment range from $800 to $23,108, with an average asking price of $2,371 and a median of $1,438.
The price spread of $22,308 (96.5% 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.
460 diamonds tracked in this segment
Price range: $800 to $23,108
Average price: $2,371
Median price: $1,438
Available across 12 retailers
Savings potential: up to 96.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
460
$800
$2,371
$1,438
$23,108
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 62.6%3.97ct | Marquise | F | VVS1 | Very Good
From $3,029
Compare at $8,107
IGISave 62.8%3.97ct | Marquise | D | VVS1 | Very Good
From $4,778
Compare at $12,840
IGISave 76.5%3.97ct | Marquise | E | VS1 | Very Good
From $1,412
Compare at $6,000
IGISave 28%3.97ct | Marquise | H | VVS2 | Very Good
From $834
Compare at $1,158
IGISave 74.1%3.97ct | Marquise | D | VVS2 | Ideal
From $2,866
Compare at $11,060
IGISave 82.7%3.98ct | Marquise | F | VS1 | Ideal
From $1,298
Compare at $7,510
IGISave 83.9%3.98ct | Marquise | E | VVS2 | Very Good
From $1,535
Compare at $9,520
IGISave 52.8%3.98ct | Marquise | H | VS1 | Ideal
From $927
Compare at $1,962
IGISave 80.2%3.98ct | Marquise | E | VS2 | Ideal
From $1,026
Compare at $5,190
IGISave 75.4%3.98ct | Marquise | F | VS1 | Very Good
From $1,920
Compare at $7,820
IGISave 74.3%3.98ct | Marquise | E | VS1 | Ideal
From $1,983
Compare at $7,730
IGISave 81%3.99ct | Marquise | F | VVS2 | Ideal
From $1,804
Compare at $9,500
IGISave 84.8%3.99ct | Marquise | E | VS1 | Ideal
From $1,365
Compare at $8,950
IGISave 83.9%3.99ct | Marquise | E | VVS2 | Very Good
From $1,538
Compare at $9,540
IGISave 83.9%3.99ct | Marquise | E | VVS2 | Very Good
From $1,538
Compare at $9,540
IGISave 85.6%3.99ct | Marquise | E | VS1 | Very Good
From $1,333
Compare at $9,270
IGISave 85.6%3.99ct | Marquise | E | VS1 | Very Good
From $1,333
Compare at $9,270
IGISave 64.5%3.99ct | Marquise | D | VVS1 | Ideal
From $4,575
Compare at $12,900
IGISave 71.8%3.99ct | Marquise | E | VS2 | Ideal
From $1,394
Compare at $4,950
IGISave 85.6%3.99ct | Marquise | E | VS1 | Very Good
From $1,333
Compare at $9,270
IGISave 78.6%3.99ct | Marquise | E | VS1 | Very Good
From $1,988
Compare at $9,270
IGISave 17%3.99ct | Marquise | D | VVS1 | Very Good
From $4,628
Compare at $5,576
IGI3.99ct | Marquise | G | VS2 | Ideal
From $1,280
Compare at $1,352
IGISave 75.8%4ct | Marquise | F | VVS2 | Excellent
From $2,064
Compare at $8,530
IGISave 72.3%4ct | Marquise | E | VS1 | Excellent
From $2,170
Compare at $7,830
IGISave 74.5%4ct | Marquise | G | VS1 | Excellent
From $1,403
Compare at $5,510
IGISave 79.1%4ct | Marquise | D | VS2 | Ideal
From $2,249
Compare at $10,770
IGI4ct | Marquise | D | IF | Very Good
From $22,993
Compare at $23,440
IGI4ct | Marquise | D | IF | Very Good
From $22,993
Compare at $23,440
IGISave 53.3%4ct | Marquise | D | VVS1 | Very Good
From $5,079
Compare at $10,875
IGISave 81.6%4ct | Marquise | F | VVS2 | Very Good
From $1,571
Compare at $8,530
IGISave 83.7%4ct | Marquise | F | VVS2 | Excellent
From $1,398
Compare at $8,580
IGISave 45.4%4ct | Marquise | F | VVS2 | Very Good
From $1,335
Compare at $2,444
GIASave 57.4%4ct | Marquise | F | VVS2 | Excellent
From $2,844
Compare at $6,680
IGISave 77.2%4ct | Marquise | G | VVS2 | Excellent
From $1,970
Compare at $8,630
IGISave 44.6%4ct | Marquise | E | VS1 | Excellent
From $1,886
Compare at $3,404
IGISave 75.6%4ct | Marquise | F | VS1 | Very Good
From $1,239
Compare at $5,083
IGISave 86.9%4ct | Marquise | E | VS2 | Very Good
From $1,014
Compare at $7,730
IGISave 17.6%4ct | Marquise | G | VS1 | Very Good
From $895
Compare at $1,087
IGISave 75.9%4ct | Marquise | D | VS1 | Good
From $2,138
Compare at $8,880
IGISave 69.2%4ct | Marquise | F | VVS2 | Excellent
From $1,234
Compare at $4,003
IGISave 61.4%4ct | Marquise | F | VS1 | Very Good
From $1,008
Compare at $2,613
IGISave 83.7%4ct | Marquise | F | VS1 | Ideal
From $1,281
Compare at $7,860
GIASave 56.2%4ct | Marquise | E | VS1 | Excellent
From $2,789
Compare at $6,375
IGISave 11.3%4ct | Marquise | E | VVS2 | Excellent
From $7,810
Compare at $8,800
IGISave 19.1%4ct | Marquise | D | VS1 | Very Good
From $1,296
Compare at $1,602
IGISave 80.9%4ct | Marquise | E | VS1 | Ideal
From $1,796
Compare at $9,410
IGISave 83.2%4ct | Marquise | E | VS2 | Very Good
From $1,283
Compare at $7,640
IGISave 54.5%4ct | Marquise | G | VS1 | Ideal
From $2,400
Compare at $5,280
IGISave 16.3%4ct | Marquise | F | VVS2 | Very Good
From $1,119
Compare at $1,336
Entry pricing in this category starts around $800.
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 $22,308 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 $1,438 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 460 comparable stones in this segment. Prices start around $800 and go up to $23,108.
Based on the latest market data, the average asking price is about $2,371 with a median around $1,438.
The observed spread is roughly $22,308 across tracked listings, which is about 96.5% 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 $1,438, 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 12 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 $22,308 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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