0.4 Carat Round Natural Diamond Prices Comparison
As of April 2026, 0.4 carat round natural diamonds usually range from $156 to $1,740, with an average price of $749.In the last month, prices for these diamonds are down 1.7%.Compare 14,670 verified listings across 6 retailers tracked by CaratRadar.
0.4 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 14,670 verified 0.4-carat round natural diamonds listed across 6 online retailers. Prices in this segment range from $156 to $1,740, with an average asking price of $749 and a median of $704.
The price spread of $1,584 (91.0% 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.
14,670 diamonds tracked in this segment
Price range: $156 to $1,740
Average price: $749
Median price: $704
Available across 6 retailers
Savings potential: up to 91.0%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
14,670
$156
$749
$704
$1,740
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIA | 0.41ct | Round | J | SI2 | Very Good
From $362
Compare at $401
Save 24.4%GIA | 0.41ct | Round | H | VVS2 | Ideal
From $677
Compare at $896
Save 15.2%GIA | 0.41ct | Round | F | VVS2 | Excellent
From $670
Compare at $790
Save 11.5%GIA | 0.41ct | Round | L | VS2 | Ideal
From $370
Compare at $418
Save 14.7%GIA | 0.41ct | Round | L | VS1 | Ideal
From $646
Compare at $757
Save 28%GIA | 0.41ct | Round | E | SI2 | Ideal
From $497
Compare at $690
GIA | 0.41ct | Round | G | IF | Ideal
From $580
Compare at $590
GIA | 0.41ct | Round | F | SI2 | Ideal
From $447
Compare at $468
Save 11.2%GIA | 0.41ct | Round | I | SI2 | Ideal
From $350
Compare at $394
GIA | 0.41ct | Round | F | SI1 | Ideal
From $504
Compare at $505
GIA | 0.41ct | Round | F | SI2 | Ideal
From $565
Compare at $585
GIA | 0.41ct | Round | G | SI2 | Ideal
From $407
Compare at $432
GIA | 0.41ct | Round | H | SI2 | Ideal
From $369
Compare at $372
GIA | 0.41ct | Round | J | VS1 | Excellent
From $484
Compare at $504
GIA | 0.41ct | Round | E | SI2 | Ideal
From $422
Compare at $438
Save 24.6%GIA | 0.41ct | Round | D | VS2 | Ideal
From $671
Compare at $890
GIA | 0.41ct | Round | I | SI1 | Ideal
From $592
Compare at $612
GIA | 0.41ct | Round | E | SI2 | Ideal
From $438
Compare at $452
Save 15.1%GIA | 0.41ct | Round | I | SI2 | Ideal
From $297
Compare at $350
GIA | 0.41ct | Round | F | VS1 | Ideal
From $717
Compare at $750
GIA | 0.41ct | Round | I | IF | Ideal
From $715
Compare at $730
Save 19.2%GIA | 0.41ct | Round | K | IF | Ideal
From $449
Compare at $556
GIA | 0.41ct | Round | G | SI2 | Excellent
From $364
Compare at $388
GIA | 0.41ct | Round | L | VS2 | Ideal
From $417
Compare at $441
GIA | 0.41ct | Round | I | SI1 | Excellent
From $383
Compare at $390
GIA | 0.41ct | Round | F | VVS2 | Ideal
From $736
Compare at $750
Save 32.1%GIA | 0.41ct | Round | J | SI1 | Ideal
From $380
Compare at $560
GIA | 0.41ct | Round | E | VVS2 | Ideal
From $856
Compare at $875
GIA | 0.41ct | Round | I | VS2 | Ideal
From $436
Compare at $456
GIA | 0.41ct | Round | E | SI2 | Ideal
From $598
Compare at $618
Save 22.9%GIA | 0.41ct | Round | F | SI1 | Ideal
From $505
Compare at $655
GIA | 0.41ct | Round | K | SI1 | Excellent
From $595
Compare at $615
Save 27.6%GIA | 0.41ct | Round | J | SI1 | Ideal
From $460
Compare at $635
GIA | 0.41ct | Round | G | VVS1 | Excellent
From $670
Compare at $685
GIA | 0.41ct | Round | J | IF | Ideal
From $560
Compare at $580
Save 30.8%GIA | 0.41ct | Round | D | VVS1 | Good
From $924
Compare at $1,336
GIA | 0.41ct | Round | E | VVS1 | Ideal
From $790
Compare at $828
Save 13.2%GIA | 0.41ct | Round | D | VVS2 | Ideal
From $738
Compare at $850
GIA | 0.41ct | Round | E | SI2 | Ideal
From $468
Compare at $471
GIA | 0.41ct | Round | J | IF | Ideal
From $467
Compare at $501
GIA | 0.41ct | Round | E | VS2 | Ideal
From $647
Compare at $650
GIA | 0.41ct | Round | H | VVS2 | Ideal
From $552
Compare at $555
GIA | 0.41ct | Round | G | VVS1 | Very Good
From $774
Compare at $796
GIA | 0.41ct | Round | F | VVS1 | Excellent
From $746
Compare at $765
GIA | 0.41ct | Round | I | SI2 | Excellent
From $492
Compare at $512
GIA | 0.41ct | Round | I | IF | Ideal
From $668
Compare at $688
GIA | 0.41ct | Round | K | SI1 | Excellent
From $395
Compare at $405
GIA | 0.41ct | Round | I | VS2 | Ideal
From $585
Compare at $605
GIA | 0.41ct | Round | K | VS2 | Ideal
From $493
Compare at $514
GIA | 0.41ct | Round | D | SI1 | Ideal
From $829
Compare at $850
Entry pricing in this category starts around $156.
What to Know When Shopping for 0.4 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,584 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 $704 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.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 14,670 comparable stones in this segment. Prices start around $156 and go up to $1,740.
Based on the latest market data, the average asking price is about $749 with a median around $704.
The observed spread is roughly $1,584 across tracked listings, which is about 91.0% 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 $704, 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 6 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 $1,584 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 Round diamonds.