0.4 Carat Marquise Natural Diamond Prices Comparison
As of February 2026, 0.4 carat marquise natural diamonds usually range from $238 to $2,057, with an average price of $774.In the last month, prices for these diamonds are down 1.6%.Compare 741 verified listings across 5 retailers tracked by CaratRadar.
0.4 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 741 verified 0.4-carat marquise natural diamonds listed across 5 online retailers. Prices in this segment range from $238 to $2,057, with an average asking price of $774 and a median of $762.
The price spread of $1,819 (88.4% 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.
741 diamonds tracked in this segment
Price range: $238 to $2,057
Average price: $774
Median price: $762
Available across 5 retailers
Savings potential: up to 88.4%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
741
$238
$774
$762
$2,057
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIA0.35ct | Marquise | G | SI1 | Excellent
From $455
Compare at $470
GIA0.35ct | Marquise | D | VS1 | Ideal
From $624
Compare at $650
GIA0.35ct | Marquise | F | SI1 | Ideal
From $410
Compare at $419
0.35ct | Marquise | D | VS1 | Excellent
From $789
Compare at $820
GIASave 10.4%0.35ct | Marquise | F | VS2 | Ideal
From $609
Compare at $680
GIA0.35ct | Marquise | H | SI1 | Ideal
From $440
Compare at $462
GIA0.35ct | Marquise | E | VS1 | Ideal
From $542
Compare at $580
GIA0.35ct | Marquise | H | SI1 | Ideal
From $399
Compare at $430
GIA0.35ct | Marquise | E | VS2 | Very Good
From $497
Compare at $500
GIA0.35ct | Marquise | E | VVS2 | Ideal
From $640
Compare at $654
GIA0.35ct | Marquise | F | VVS1 | Ideal
From $560
Compare at $574
GIA0.35ct | Marquise | E | VVS1 | Excellent
From $785
Compare at $800
GIA0.35ct | Marquise | D | VS2 | Very Good
From $570
Compare at $579
GIA0.35ct | Marquise | D | VVS2 | Ideal
From $714
Compare at $740
GIA0.35ct | Marquise | I | VS2 | Ideal
From $502
Compare at $510
GIA0.35ct | Marquise | F | VS2 | Ideal
From $489
Compare at $500
GIA0.35ct | Marquise | D | SI1 | Ideal
From $484
Compare at $490
GIA0.35ct | Marquise | G | SI2 | Ideal
From $390
Compare at $393
GIA0.35ct | Marquise | E | SI2 | Ideal
From $396
Compare at $400
GIA0.35ct | Marquise | G | IF | Good
From $550
Compare at $561
GIA0.35ct | Marquise | F | VVS2 | Very Good
From $580
Compare at $593
GIASave 19.9%0.35ct | Marquise | E | IF | Excellent
From $649
Compare at $810
GIASave 23.1%0.35ct | Marquise | G | VVS1 | Excellent
From $584
Compare at $760
GIA0.35ct | Marquise | F | VS2 | Good
From $552
Compare at $590
GIA0.35ct | Marquise | F | VVS2 | Excellent
From $540
Compare at $542
GIA0.35ct | Marquise | F | VS2 | Ideal
From $611
Compare at $640
GIA0.35ct | Marquise | E | VS2 | Ideal
From $570
Compare at $600
GIA0.35ct | Marquise | G | VS1 | Ideal
From $580
Compare at $589
GIA0.35ct | Marquise | D | SI1 | Ideal
From $440
Compare at $451
GIA0.35ct | Marquise | F | SI2 | Ideal
From $430
Compare at $437
GIASave 18.1%0.35ct | Marquise | D | VVS1 | Excellent
From $745
Compare at $910
GIA0.35ct | Marquise | F | SI1 | Ideal
From $410
Compare at $419
GIA0.35ct | Marquise | F | VS2 | Ideal
From $498
Compare at $500
GIA0.35ct | Marquise | E | SI1 | Ideal
From $440
Compare at $460
GIA0.35ct | Marquise | D | VVS2 | Ideal
From $730
Compare at $761
GIA0.35ct | Marquise | E | VVS2 | Ideal
From $654
Compare at $690
GIASave 26.2%0.35ct | Marquise | E | VS2 | Excellent
From $635
Compare at $860
GIA0.35ct | Marquise | E | IF | Ideal
From $732
Compare at $760
GIA0.35ct | Marquise | I | VS2 | Ideal
From $440
Compare at $459
GIASave 11.7%0.35ct | Marquise | E | VS2 | Ideal
From $574
Compare at $650
GIA0.35ct | Marquise | F | VS2 | Very Good
From $516
Compare at $560
GIASave 19.6%0.35ct | Marquise | H | VVS1 | Excellent
From $651
Compare at $810
GIA0.35ct | Marquise | F | VVS2 | Ideal
From $598
Compare at $630
GIA0.35ct | Marquise | D | VVS1 | Ideal
From $717
Compare at $740
GIA0.35ct | Marquise | E | VS2 | Very Good
From $610
Compare at $625
GIASave 13%0.35ct | Marquise | F | VS2 | Ideal
From $531
Compare at $610
GIA0.35ct | Marquise | D | VS2 | Ideal
From $653
Compare at $670
GIA0.35ct | Marquise | I | VVS2 | Ideal
From $460
Compare at $480
GIA0.35ct | Marquise | F | VVS2 | Ideal
From $618
Compare at $630
GIA0.35ct | Marquise | E | VVS2 | Very Good
From $640
Compare at $654
Entry pricing in this category starts around $238.
What to Know When Shopping for 0.4 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,819 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 $762 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 741 comparable stones in this segment. Prices start around $238 and go up to $2,057.
Based on the latest market data, the average asking price is about $774 with a median around $762.
The observed spread is roughly $1,819 across tracked listings, which is about 88.4% 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 $762, 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 $1,819 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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Tracking Natural inventory for 0.4 carat Marquise diamonds.