0.4 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 0.4 carat marquise lab grown diamonds usually range from $166 to $1,317, with an average price of $267.In the last month, prices for these diamonds are down 2.1%.Compare 1,445 verified listings across 3 retailers tracked by CaratRadar.
0.4 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,445 verified 0.4-carat marquise lab grown diamonds listed across 3 online retailers. Prices in this segment range from $166 to $1,317, with an average asking price of $267 and a median of $266.
The price spread of $1,151 (87.4% 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.
1,445 diamonds tracked in this segment
Price range: $166 to $1,317
Average price: $267
Median price: $266
Available across 3 retailers
Savings potential: up to 87.4%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,445
$166
$267
$266
$1,317
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 90.4%0.35ct | Marquise | F | VS1 | Ideal
From $179
Compare at $1,853
IGISave 88.9%0.35ct | Marquise | F | VS2 | Ideal
From $179
Compare at $1,608
IGISave 73.4%0.35ct | Marquise | H | VS2 | Ideal
From $410
Compare at $1,543
IGISave 89%0.35ct | Marquise | G | VS1 | Ideal
From $179
Compare at $1,622
IGISave 89%0.35ct | Marquise | G | VS1 | Ideal
From $179
Compare at $1,622
GCALSave 19.3%0.35ct | Marquise | D | VVS2 | Excellent
From $242
Compare at $300
GCALSave 20.6%0.35ct | Marquise | D | SI1 | Excellent
From $222
Compare at $280
GCALSave 11.6%0.35ct | Marquise | D | VS2 | Excellent
From $194
Compare at $220
GCALSave 35.2%0.35ct | Marquise | E | VS2 | Excellent
From $181
Compare at $280
IGISave 59.4%0.35ct | Marquise | F | VS1 | Very Good
From $179
Compare at $440
IGISave 41.6%0.35ct | Marquise | D | VVS1 | Ideal
From $297
Compare at $508
IGISave 27.3%0.35ct | Marquise | E | VS1 | Excellent
From $212
Compare at $292
IGISave 27.1%0.35ct | Marquise | D | VS1 | Excellent
From $217
Compare at $298
IGISave 34.3%0.35ct | Marquise | D | VS1 | Excellent
From $217
Compare at $331
IGISave 34.3%0.35ct | Marquise | D | VS1 | Very Good
From $217
Compare at $331
IGISave 41.6%0.35ct | Marquise | E | VVS1 | Ideal
From $273
Compare at $467
IGISave 52.6%0.35ct | Marquise | D | VVS2 | Ideal
From $288
Compare at $607
IGISave 34.3%0.35ct | Marquise | D | VVS2 | Excellent
From $221
Compare at $336
IGISave 34.3%0.35ct | Marquise | D | VVS1 | Excellent
From $246
Compare at $375
IGISave 58%0.35ct | Marquise | D | VVS2 | Ideal
From $288
Compare at $686
IGISave 53.5%0.35ct | Marquise | D | VS1 | Ideal
From $268
Compare at $577
IGISave 35.1%0.35ct | Marquise | D | VVS2 | Very Good
From $221
Compare at $340
IGISave 41.1%0.35ct | Marquise | D | VS1 | Ideal
From $216
Compare at $366
IGISave 59.7%0.35ct | Marquise | E | VVS1 | Ideal
From $273
Compare at $676
IGISave 55.3%0.35ct | Marquise | D | VS1 | Very Good
From $233
Compare at $522
IGISave 61.9%0.35ct | Marquise | E | VS1 | Very Good
From $210
Compare at $552
GCALSave 33.5%0.35ct | Marquise | E | SI2 | Excellent
From $180
Compare at $270
GCAL0.35ct | Marquise | E | VVS1 | Excellent
From $255
Compare at $270
GCALSave 31.7%0.35ct | Marquise | E | VS1 | Excellent
From $191
Compare at $280
IGISave 60.1%0.35ct | Marquise | H | VS2 | Very Good
From $440
Compare at $1,103
IGISave 89%0.35ct | Marquise | G | VS1 | Very Good
From $179
Compare at $1,622
IGISave 75.9%0.35ct | Marquise | H | VS1 | Ideal
From $420
Compare at $1,746
IGISave 84.8%0.35ct | Marquise | E | VS2 | Ideal
From $179
Compare at $1,176
IGISave 90.1%0.35ct | Marquise | F | VS2 | Ideal
From $179
Compare at $1,812
IGISave 76.2%0.35ct | Marquise | H | VS2 | Ideal
From $410
Compare at $1,725
IGISave 59.4%0.35ct | Marquise | F | VS1 | Ideal
From $179
Compare at $440
IGISave 58.4%0.35ct | Marquise | E | VS1 | Ideal
From $277
Compare at $667
IGISave 33.7%0.35ct | Marquise | F | VS1 | Good
From $212
Compare at $320
IGISave 33.5%0.35ct | Marquise | D | VVS2 | Ideal
From $295
Compare at $443
IGISave 27.3%0.35ct | Marquise | E | VS1 | Excellent
From $212
Compare at $292
IGISave 41.6%0.35ct | Marquise | D | VVS1 | Ideal
From $297
Compare at $508
IGISave 33.5%0.35ct | Marquise | D | VVS2 | Ideal
From $295
Compare at $443
IGISave 34.3%0.35ct | Marquise | D | VVS2 | Very Good
From $221
Compare at $336
IGISave 34.3%0.35ct | Marquise | D | VVS2 | Very Good
From $221
Compare at $336
IGI0.35ct | Marquise | D | VVS1 | Very Good
From $308
Compare at $310
IGISave 52.6%0.35ct | Marquise | D | VVS2 | Very Good
From $288
Compare at $607
IGISave 27.1%0.35ct | Marquise | D | VS1 | Excellent
From $217
Compare at $298
IGISave 52.6%0.35ct | Marquise | E | VS1 | Ideal
From $286
Compare at $604
IGISave 34.4%0.35ct | Marquise | E | VS1 | Very Good
From $212
Compare at $324
IGISave 34.3%0.35ct | Marquise | D | VS1 | Very Good
From $217
Compare at $331
Entry pricing in this category starts around $166.
What to Know When Shopping for 0.4 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,151 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 $266 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 1,445 comparable stones in this segment. Prices start around $166 and go up to $1,317.
Based on the latest market data, the average asking price is about $267 with a median around $266.
The observed spread is roughly $1,151 across tracked listings, which is about 87.4% 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 $266, 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 3 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 $1,151 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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