3.4 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 3.4 carat marquise lab grown diamonds usually range from $595 to $44,020, with an average price of $3,928.In the last month, prices for these diamonds are up 2.4%.Compare 92 verified listings across 5 retailers tracked by CaratRadar.
3.4 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 92 verified 3.4-carat marquise lab grown diamonds listed across 5 online retailers. Prices in this segment range from $595 to $44,020, with an average asking price of $3,928 and a median of $2,758.
The price spread of $43,425 (98.6% 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.
92 diamonds tracked in this segment
Price range: $595 to $44,020
Average price: $3,928
Median price: $2,758
Available across 5 retailers
Savings potential: up to 98.6%
Price Range Overview
As of Apr 12, 2026Real market range for this carat, shape, and diamond type.
92
$595
$3,928
$2,758
$44,020
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 76.2%IGI | 3.4ct | Marquise | F | VS1 | Very Good
From $1,185
Compare at $4,970
Save 75.7%IGI | 3.4ct | Marquise | F | VS1 | Excellent
From $1,063
Compare at $4,370
Save 77.8%IGI | 3.4ct | Marquise | E | VS1 | Ideal
From $1,833
Compare at $8,260
Save 75.5%IGI | 3.4ct | Marquise | F | VS1 | Excellent
From $1,471
Compare at $6,010
Save 74.6%IGI | 3.4ct | Marquise | E | VS1 | Ideal
From $1,267
Compare at $4,990
Save 72.7%IGI | 3.4ct | Marquise | E | VVS1 | Very Good
From $2,606
Compare at $9,530
Save 18.3%IGI | 3.4ct | Marquise | E | VVS2 | Ideal
From $5,280
Compare at $6,460
Save 78.1%IGI | 3.4ct | Marquise | G | VVS2 | Ideal
From $1,103
Compare at $5,032
IGI | 3.4ct | Marquise | F | VVS2 | Excellent
From $1,091
Compare at $4,680
Save 77.1%IGI | 3.41ct | Marquise | F | VS1 | Excellent
From $1,161
Compare at $5,060
Save 77.1%IGI | 3.41ct | Marquise | D | VVS2 | Ideal
From $2,173
Compare at $9,500
Save 76.2%IGI | 3.41ct | Marquise | E | VS2 | Excellent
From $1,533
Compare at $6,440
Save 75.2%IGI | 3.41ct | Marquise | F | SI1 | Ideal
From $889
Compare at $3,580
Save 77.4%IGI | 3.41ct | Marquise | G | VS1 | Very Good
From $931
Compare at $4,120
Save 75%IGI | 3.41ct | Marquise | E | VS2 | Excellent
From $1,058
Compare at $4,230
Save 58.9%IGI | 3.41ct | Marquise | E | VVS2 | Excellent
From $4,560
Compare at $11,090
Save 65.5%IGI | 3.41ct | Marquise | E | VVS2 | Very Good
From $1,948
Compare at $5,640
Save 84.7%IGI | 3.41ct | Marquise | E | VVS2 | Excellent
From $1,185
Compare at $7,720
Save 44.3%IGI | 3.41ct | Marquise | E | VVS2 | Very Good
From $870
Compare at $1,562
Save 79.7%IGI | 3.41ct | Marquise | F | VS1 | Excellent
From $1,233
Compare at $6,077
Save 78.4%IGI | 3.42ct | Marquise | E | VS1 | Ideal
From $1,025
Compare at $4,750
Save 62.8%IGI | 3.42ct | Marquise | FANCY | VS2 | Ideal
From $3,218
Compare at $8,660
Save 77.2%IGI | 3.42ct | Marquise | F | VS1 | Ideal
From $1,996
Compare at $8,740
Save 77.7%IGI | 3.42ct | Marquise | D | IF | Very Good
From $10,376
Compare at $46,617
Save 82.5%IGI | 3.42ct | Marquise | D | VS2 | Excellent
From $1,197
Compare at $6,840
Save 78.4%IGI | 3.42ct | Marquise | G | VS1 | Ideal
From $934
Compare at $4,330
Save 76.2%IGI | 3.42ct | Marquise | E | VS2 | Excellent
From $1,061
Compare at $4,460
Save 18.5%IGI | 3.42ct | Marquise | H | VVS2 | Excellent
From $921
Compare at $1,130
Save 76%IGI | 3.42ct | Marquise | E | VS1 | Excellent
From $1,146
Compare at $4,780
Save 77.2%IGI | 3.42ct | Marquise | F | VS1 | Excellent
From $1,049
Compare at $4,610
Save 76.1%IGI | 3.42ct | Marquise | F | VS1 | Excellent
From $1,049
Compare at $4,390
Save 73.9%IGI | 3.43ct | Marquise | F | VS1 | Ideal
From $1,212
Compare at $4,640
Save 78.9%IGI | 3.43ct | Marquise | D | VS1 | Excellent
From $2,000
Compare at $9,470
Save 78.4%IGI | 3.43ct | Marquise | F | VVS2 | Excellent
From $1,797
Compare at $8,330
Save 83.6%IGI | 3.43ct | Marquise | E | VS1 | Excellent
From $875
Compare at $5,350
Save 77.4%IGI | 3.43ct | Marquise | E | VS2 | Ideal
From $1,064
Compare at $4,700
Save 78.7%IGI | 3.43ct | Marquise | E | VS2 | Excellent
From $1,052
Compare at $4,940
Save 80%IGI | 3.43ct | Marquise | E | VS2 | Ideal
From $1,076
Compare at $5,380
Save 22.9%IGI | 3.43ct | Marquise | H | VVS2 | Excellent
From $848
Compare at $1,100
Save 71.3%IGI | 3.43ct | Marquise | D | VVS2 | Very Good
From $3,055
Compare at $10,660
Save 83.9%IGI | 3.43ct | Marquise | E | VVS2 | Very Good
From $1,326
Compare at $8,250
Save 84.4%IGI | 3.43ct | Marquise | D | VS1 | Very Good
From $1,145
Compare at $7,344
Save 81.3%IGI | 3.44ct | Marquise | G | VS1 | Excellent
From $850
Compare at $4,540
Save 79.6%IGI | 3.44ct | Marquise | E | VS2 | Ideal
From $1,055
Compare at $5,180
Save 82.1%IGI | 3.44ct | Marquise | G | VS1 | Ideal
From $850
Compare at $4,740
Save 50.3%IGI | 3.44ct | Marquise | E | VVS2 | Ideal
From $1,020
Compare at $2,051
Save 64.4%IGI | 3.44ct | Marquise | F | VS2 | Very Good
From $1,370
Compare at $3,850
Save 80.7%IGI | 3.44ct | Marquise | E | VVS1 | Very Good
From $1,845
Compare at $9,570
Save 24.9%IGI | 3.44ct | Marquise | E | VS1 | Very Good
From $1,094
Compare at $1,457
Save 65.7%IGI | 3.44ct | Marquise | E | VS2 | Very Good
From $1,465
Compare at $4,270
Entry pricing in this category starts around $595.
What to Know When Shopping for 3.4 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $43,425 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 $2,758 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 92 comparable stones in this segment. Prices start around $595 and go up to $44,020.
Based on the latest market data, the average asking price is about $3,928 with a median around $2,758.
The observed spread is roughly $43,425 across tracked listings, which is about 98.6% 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 $2,758, 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 $43,425 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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