0.4 Carat Round Natural Diamond Prices Comparison
As of February 2026, 0.4 carat round natural diamonds usually range from $257 to $1,850, with an average price of $710.In the last month, prices for these diamonds are down 1.5%.Compare 6,566 verified listings across 4 retailers tracked by CaratRadar.
0.4 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 6,566 verified 0.4-carat round natural diamonds listed across 4 online retailers. Prices in this segment range from $257 to $1,850, with an average asking price of $710 and a median of $683.
The price spread of $1,593 (86.1% 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.
6,566 diamonds tracked in this segment
Price range: $257 to $1,850
Average price: $710
Median price: $683
Available across 4 retailers
Savings potential: up to 86.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
6,566
$257
$710
$683
$1,850
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 17.7%0.35ct | Round | F | VS2 | Excellent
From $568
Compare at $690
GIA0.35ct | Round | F | VVS1 | Ideal
From $612
Compare at $670
GIA0.35ct | Round | F | VVS2 | Ideal
From $603
Compare at $660
GIA0.35ct | Round | D | IF | Excellent
From $1,110
Compare at $1,208
GIA0.35ct | Round | E | IF | Excellent
From $860
Compare at $880
GIA0.35ct | Round | F | IF | Excellent
From $830
Compare at $840
GIA0.35ct | Round | F | VVS1 | Excellent
From $777
Compare at $790
GIASave 12.2%0.35ct | Round | G | VVS2 | Excellent
From $553
Compare at $630
GIASave 11.6%0.35ct | Round | G | VS1 | Excellent
From $557
Compare at $630
GIA0.35ct | Round | E | VVS2 | Excellent
From $602
Compare at $660
GIASave 10.7%0.35ct | Round | F | VVS2 | Ideal
From $563
Compare at $630
GIA0.35ct | Round | F | VVS1 | Ideal
From $741
Compare at $820
GIASave 13.4%0.35ct | Round | G | VS2 | Excellent
From $520
Compare at $600
GIA0.35ct | Round | E | SI2 | Ideal
From $359
Compare at $363
GIASave 10.2%0.35ct | Round | F | VVS2 | Excellent
From $584
Compare at $650
GIASave 16.8%0.35ct | Round | H | VS2 | Ideal
From $483
Compare at $580
GIA0.35ct | Round | E | IF | Ideal
From $850
Compare at $871
GIA0.35ct | Round | E | VVS1 | Ideal
From $694
Compare at $730
GIA0.35ct | Round | F | VVS1 | Excellent
From $721
Compare at $750
GIASave 11.3%0.35ct | Round | H | VVS1 | Excellent
From $559
Compare at $630
GIA0.35ct | Round | E | VVS1 | Excellent
From $770
Compare at $780
GIASave 14.1%0.35ct | Round | G | VVS2 | Ideal
From $507
Compare at $590
GIA0.35ct | Round | F | VVS1 | Excellent
From $770
Compare at $780
GIA0.35ct | Round | F | VVS1 | Excellent
From $719
Compare at $750
GIA0.35ct | Round | F | VVS1 | Excellent
From $777
Compare at $790
GIA0.35ct | Round | D | IF | Ideal
From $1,040
Compare at $1,117
GIA0.35ct | Round | D | VVS1 | Excellent
From $1,010
Compare at $1,090
GIASave 11.7%0.35ct | Round | G | VVS2 | Ideal
From $547
Compare at $620
GIASave 14.2%0.35ct | Round | G | VS2 | Ideal
From $515
Compare at $600
GIASave 16.2%0.35ct | Round | E | VVS2 | Ideal
From $603
Compare at $720
GIASave 12.2%0.35ct | Round | G | VVS2 | Excellent
From $553
Compare at $630
GIA0.35ct | Round | F | IF | Excellent
From $770
Compare at $830
GIASave 14.5%0.35ct | Round | G | VS1 | Excellent
From $513
Compare at $600
GIASave 12.6%0.35ct | Round | G | VVS2 | Excellent
From $542
Compare at $620
GIASave 16.6%0.35ct | Round | F | VVS2 | Excellent
From $584
Compare at $700
GIA0.35ct | Round | E | VVS1 | Excellent
From $808
Compare at $870
GIA0.35ct | Round | F | VVS1 | Excellent
From $741
Compare at $760
GIASave 16.6%0.35ct | Round | E | VVS2 | Excellent
From $576
Compare at $690
GIA0.35ct | Round | F | VVS2 | Ideal
From $590
Compare at $650
GIA0.35ct | Round | E | VVS1 | Ideal
From $832
Compare at $890
GIASave 12.6%0.35ct | Round | F | VVS2 | Excellent
From $577
Compare at $660
GIA0.35ct | Round | L | SI1 | Ideal
From $320
Compare at $327
GIASave 21.2%0.35ct | Round | G | VVS2 | Excellent
From $513
Compare at $650
GIASave 14.5%0.35ct | Round | G | VVS1 | Ideal
From $505
Compare at $590
GIA0.35ct | Round | D | IF | Excellent
From $1,100
Compare at $1,197
GIASave 15.1%0.35ct | Round | G | VS2 | Ideal
From $510
Compare at $600
GIA0.35ct | Round | I | VVS1 | Ideal
From $591
Compare at $650
GIA0.35ct | Round | G | SI2 | Excellent
From $354
Compare at $368
GIA0.35ct | Round | F | VVS2 | Excellent
From $590
Compare at $650
GIASave 16.5%0.35ct | Round | H | VS1 | Excellent
From $484
Compare at $580
Entry pricing in this category starts around $257.
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 $1,593 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 $683 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 6,566 comparable stones in this segment. Prices start around $257 and go up to $1,850.
Based on the latest market data, the average asking price is about $710 with a median around $683.
The observed spread is roughly $1,593 across tracked listings, which is about 86.1% 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 $683, 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 4 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 $1,593 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
0.3 Carat Round Natural Diamond Prices
0.5 Carat Round Natural Diamond Prices
0.6 Carat Round Natural Diamond Prices
0.7 Carat Round Natural Diamond Prices
0.8 Carat Round Natural Diamond Prices
0.9 Carat Round Natural Diamond Prices
1 Carat Round Natural Diamond Prices
0.4 Carat Emerald Natural Diamond Prices
0.4 Carat Princess Natural Diamond Prices
0.4 Carat Heart Natural Diamond Prices
0.4 Carat Oval Natural Diamond Prices
0.4 Carat Pear Natural Diamond Prices
Tracking Natural inventory for 0.4 carat Round diamonds.