4.3 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 4.3 carat marquise lab grown diamonds usually range from $783 to $8,440, with an average price of $2,546.In the last month, prices for these diamonds are up 4.5%.Compare 60 verified listings across 5 retailers tracked by CaratRadar.
4.3 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 60 verified 4.3-carat marquise lab grown diamonds listed across 5 online retailers. Prices in this segment range from $783 to $8,440, with an average asking price of $2,546 and a median of $2,100.
The price spread of $7,657 (90.7% 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.
60 diamonds tracked in this segment
Price range: $783 to $8,440
Average price: $2,546
Median price: $2,100
Available across 5 retailers
Savings potential: up to 90.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
60
$783
$2,546
$2,100
$8,440
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 76.1%4.25ct | Marquise | F | VS2 | Ideal
From $1,684
Compare at $7,050
IGISave 56%4.25ct | Marquise | D | VVS2 | Ideal
From $2,359
Compare at $5,355
IGISave 66.5%4.25ct | Marquise | F | VS1 | Ideal
From $2,824
Compare at $8,430
IGISave 58.6%4.25ct | Marquise | H | VS1 | Ideal
From $783
Compare at $1,894
IGISave 81.2%4.25ct | Marquise | D | VVS2 | Excellent
From $2,359
Compare at $12,570
GCALSave 77.5%4.25ct | Marquise | E | VS1 | Excellent
From $2,325
Compare at $10,330
IGISave 76.3%4.25ct | Marquise | G | VS2 | Ideal
From $1,302
Compare at $5,483
IGISave 49.2%4.25ct | Marquise | H | VVS2 | Ideal
From $1,064
Compare at $2,095
IGISave 69.5%4.26ct | Marquise | E | VS1 | Ideal
From $3,077
Compare at $10,090
IGISave 69.5%4.26ct | Marquise | E | VS1 | Ideal
From $3,077
Compare at $10,090
IGISave 18.6%4.26ct | Marquise | E | VVS2 | Excellent
From $8,320
Compare at $10,224
IGISave 66.5%4.26ct | Marquise | F | VS1 | Ideal
From $2,830
Compare at $8,450
IGISave 80.2%4.26ct | Marquise | F | VS2 | Ideal
From $1,452
Compare at $7,330
IGISave 48.6%4.26ct | Marquise | H | VS1 | Ideal
From $962
Compare at $1,870
IGISave 78.9%4.26ct | Marquise | E | VVS2 | Excellent
From $2,156
Compare at $10,224
IGISave 80.4%4.27ct | Marquise | D | VVS2 | Ideal
From $2,338
Compare at $11,910
IGISave 84.5%4.27ct | Marquise | E | VS2 | Very Good
From $1,531
Compare at $9,860
IGISave 77.1%4.27ct | Marquise | F | VS2 | Very Good
From $1,094
Compare at $4,780
GIASave 37.9%4.27ct | Marquise | E | VVS1 | Excellent
From $7,534
Compare at $12,140
IGISave 78.1%4.28ct | Marquise | G | VS1 | Ideal
From $1,026
Compare at $4,690
IGISave 66.3%4.28ct | Marquise | G | VVS2 | Ideal
From $2,720
Compare at $8,060
IGISave 82.8%4.28ct | Marquise | F | VVS2 | Ideal
From $1,590
Compare at $9,260
IGISave 79.5%4.28ct | Marquise | F | VVS1 | Excellent
From $3,846
Compare at $18,740
IGISave 48.5%4.28ct | Marquise | H | VS1 | Ideal
From $966
Compare at $1,878
IGISave 56%4.28ct | Marquise | F | VVS2 | Very Good
From $1,501
Compare at $3,409
IGISave 63.1%4.28ct | Marquise | F | VS2 | Ideal
From $2,738
Compare at $7,430
IGISave 78.9%4.28ct | Marquise | E | VVS2 | Excellent
From $2,166
Compare at $10,272
IGISave 85.1%4.29ct | Marquise | G | VS2 | Ideal
From $999
Compare at $6,720
IGISave 48.6%4.29ct | Marquise | H | VS1 | Ideal
From $968
Compare at $1,883
GCALSave 77.5%4.29ct | Marquise | F | VVS2 | Excellent
From $2,335
Compare at $10,380
IGISave 12.8%4.29ct | Marquise | E | VVS2 | Excellent
From $8,380
Compare at $9,610
IGISave 83.9%4.29ct | Marquise | E | VVS2 | Very Good
From $1,737
Compare at $10,760
IGISave 69.6%4.29ct | Marquise | D | VVS2 | Excellent
From $3,637
Compare at $11,970
IGISave 75.5%4.3ct | Marquise | G | VS2 | Ideal
From $1,462
Compare at $5,970
IGISave 48.6%4.3ct | Marquise | H | VS1 | Ideal
From $971
Compare at $1,887
GCALSave 77.5%4.3ct | Marquise | F | VVS2 | Excellent
From $2,341
Compare at $10,410
IGISave 72.5%4.3ct | Marquise | G | VS1 | Ideal
From $1,296
Compare at $4,710
IGISave 69.5%4.3ct | Marquise | E | VS1 | Ideal
From $3,105
Compare at $10,180
IGISave 66.7%4.3ct | Marquise | D | VS1 | Ideal
From $1,462
Compare at $4,385
IGISave 66.3%4.3ct | Marquise | G | VVS2 | Ideal
From $2,733
Compare at $8,100
IGISave 69.5%4.31ct | Marquise | E | VS1 | Ideal
From $3,113
Compare at $10,210
IGISave 81.3%4.31ct | Marquise | E | VVS1 | Excellent
From $5,192
Compare at $27,730
IGISave 69.4%4.31ct | Marquise | E | VVS1 | Very Good
From $3,652
Compare at $11,950
IGISave 48.5%4.31ct | Marquise | H | VS1 | Ideal
From $973
Compare at $1,891
IGISave 69.2%4.32ct | Marquise | E | VVS1 | Ideal
From $4,227
Compare at $13,724
IGISave 18.6%4.32ct | Marquise | E | VVS2 | Excellent
From $8,440
Compare at $10,368
IGISave 54.1%4.32ct | Marquise | F | VS1 | Excellent
From $1,322
Compare at $2,880
IGISave 68.5%4.32ct | Marquise | F | VVS1 | Very Good
From $3,887
Compare at $12,351
IGISave 67.6%4.32ct | Marquise | F | VS1 | Excellent
From $1,080
Compare at $3,328
IGISave 53.9%4.33ct | Marquise | F | VVS2 | Excellent
From $1,605
Compare at $3,484
Entry pricing in this category starts around $783.
What to Know When Shopping for 4.3 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $7,657 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 $2,100 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 60 comparable stones in this segment. Prices start around $783 and go up to $8,440.
Based on the latest market data, the average asking price is about $2,546 with a median around $2,100.
The observed spread is roughly $7,657 across tracked listings, which is about 90.7% 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 $2,100, 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 5 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 $7,657 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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