0.4 Carat Natural Diamond Prices Comparison
As of July 2026, the average price of a 0.4 carat natural diamond is $710.0.4 carat diamonds can cost anywhere from $130 to $16,785 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 1.4%.Compare 22,915 verified listings across 8 retailers in the tables below.
0.4 Carat Natural Diamond Market Overview
CaratRadar currently tracks 22,915 verified 0.4-carat natural diamonds listed across 8 online retailers. Prices in this segment range from $130 to $16,785, with an average asking price of $710 and a median of $680.
The price spread of $16,655 (99.2% 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.
22,915 diamonds tracked in this segment
Price range: $130 to $16,785
Average price: $710
Median price: $680
Available across 8 retailers
Savings potential: up to 99.2%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
22,915
$130
$710
$680
$16,785
Price History
Price Comparison Matrix
0.4 Carat Natural Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 0.41ct | Round | L | SI2 | Ideal
From $171
Compare at $172
IGI | 0.41ct | Round | J | I1 | Good
From $207
Compare at $212
IGI | 0.42ct | Round | J | I1 | Good
From $212
Compare at $215
IGI | 0.42ct | Round | J | I1 | Good
From $212
Compare at $215
IGI | 0.41ct | Round | L | I1 | Ideal
From $223
Compare at $224
GIA | 0.41ct | Round | L | SI2 | Good
From $226
Compare at $230
Save 27.9%GIA | 0.42ct | Round | L | SI2 | Excellent
From $230
Compare at $319
IGI | 0.41ct | Round | I | I1 | Very Good
From $234
Compare at $236
IGI | 0.41ct | Round | I | I1 | Ideal
From $240
Compare at $243
IGI | 0.42ct | Round | K | SI1 | Excellent
From $251
Compare at $259
GIA | 0.41ct | Round | K | SI1 | Excellent
From $252
Compare at $262
IGI | 0.41ct | Round | K | SI1 | Excellent
From $254
Compare at $262
IGI | 0.41ct | Round | K | VS2 | Excellent
From $259
Compare at $262
IGI | 0.41ct | Round | I | I1 | Excellent
From $263
Compare at $275
IGI | 0.41ct | Round | I | I1 | Ideal
From $263
Compare at $275
IGI | 0.41ct | Round | I | I1 | Ideal
From $263
Compare at $275
IGI | 0.45ct | Round | H | I1 | Ideal
From $266
Compare at $277
IGI | 0.42ct | Round | I | I1 | Very Good
From $269
Compare at $282
IGI | 0.42ct | Round | I | I1 | Ideal
From $269
Compare at $282
GIA | 0.43ct | Round | K | SI1 | Excellent
From $271
Compare at $284
Save 27.9%GIA | 0.41ct | Heart | K | VVS1 | Very Good
From $272
Compare at $377
IGI | 0.41ct | Round | J | I1 | Ideal
From $272
Compare at $286
GIA | 0.41ct | Round | J | SI1 | Excellent
From $273
Compare at $274
IGI | 0.41ct | Round | I | SI2 | Excellent
From $274
Compare at $288
IGI | 0.43ct | Round | L | SI1 | Ideal
From $277
Compare at $292
GIA | 0.41ct | Emerald | F | SI2 | Ideal
From $278
Compare at $304
IGI | 0.46ct | Oval | I | SI2 | Ideal
From $278
Compare at $279
Save 19.1%GIA | 0.41ct | Emerald | J | VS2 | Excellent
From $280
Compare at $346
GIA | 0.41ct | Emerald | I | SI2 | Ideal
From $280
Compare at $298
IGI | 0.41ct | Round | J | I1 | Ideal
From $280
Compare at $295
Save 20.7%GIA | 0.41ct | Emerald | J | SI1 | Excellent
From $283
Compare at $357
IGI | 0.41ct | Round | L | VS2 | Ideal
From $283
Compare at $300
Save 17.9%GIA | 0.41ct | Oval | K | SI1 | Very Good
From $284
Compare at $346
GIA | 0.41ct | Round | K | SI1 | Excellent
From $284
Compare at $285
IGI | 0.41ct | Round | H | I1 | Ideal
From $287
Compare at $305
Save 20%GIA | 0.41ct | Emerald | J | SI1 | Excellent
From $288
Compare at $360
IGI | 0.44ct | Round | J | I1 | Excellent
From $289
Compare at $307
IGI | 0.44ct | Round | L | SI2 | Excellent
From $289
Compare at $308
IGI | 0.45ct | Round | H | I1 | Ideal
From $289
Compare at $306
IGI | 0.45ct | Round | H | I1 | Excellent
From $289
Compare at $306
IGI | 0.45ct | Round | G | SI2 | Very Good
From $289
Compare at $308
IGI | 0.41ct | Round | G | I1 | Excellent
From $289
Compare at $307
IGI | 0.41ct | Round | H | SI2 | Very Good
From $289
Compare at $307
Save 22.4%GIA | 0.43ct | Round | J | SI1 | Ideal
From $291
Compare at $375
IGI | 0.42ct | Round | H | I1 | Ideal
From $292
Compare at $312
Save 38.8%GIA | 0.41ct | Oval | J | SI1 | Excellent
From $294
Compare at $480
IGI | 0.41ct | Round | F | I1 | Ideal
From $295
Compare at $316
IGI | 0.41ct | Round | H | SI2 | Excellent
From $295
Compare at $315
Save 21.5%GIA | 0.46ct | Round | I | SI2 | Excellent
From $296
Compare at $377
GIA | 0.41ct | Round | H | SI2 | Very Good
From $296
Compare at $297
Entry pricing in this category starts around $130.
What to Know When Shopping for 0.4 Carat Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $16,655 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 $680 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.
Frequently Asked Questions
We currently track 22,915 comparable stones in this segment. Prices start around $130 and go up to $16,785.
Based on the latest market data, the average asking price is about $710 with a median around $680.
The observed spread is roughly $16,655 across tracked listings, which is about 99.2% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $710. The median price is $680, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 8 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 $16,655 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.
0.4 Carat Round Natural Diamond Prices
0.4 Carat Oval Natural Diamond Prices
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Tracking Natural inventory for 0.4 carat all-shape diamonds.