0.4 Carat Lab Grown Diamond Prices Comparison
As of February 2026, the average price of a 0.4 carat lab grown diamond is $247.0.4 carat diamonds can cost anywhere from $138 to $3,042 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 0.7%.Compare 16,316 verified listings across 4 retailers in the tables below.
0.4 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 16,316 verified 0.4-carat lab grown diamonds listed across 4 online retailers. Prices in this segment range from $138 to $3,042, with an average asking price of $247 and a median of $224.
The price spread of $2,904 (95.5% 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.
16,316 diamonds tracked in this segment
Price range: $138 to $3,042
Average price: $247
Median price: $224
Available across 4 retailers
Savings potential: up to 95.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
16,316
$138
$247
$224
$3,042
Price History
Price Comparison Matrix
0.4 Carat Lab Grown 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.
IGISave 41.1%0.35ct | Asscher | D | VS1 | Ideal
From $210
Compare at $357
IGISave 41.1%0.35ct | Asscher | E | VVS2 | Ideal
From $210
Compare at $357
IGISave 57.9%0.35ct | Asscher | F | VS1 | Very Good
From $196
Compare at $466
IGISave 41.2%0.35ct | Asscher | F | VVS2 | Good
From $205
Compare at $349
IGISave 34.4%0.35ct | Asscher | E | VS1 | Excellent
From $224
Compare at $342
IGISave 41.1%0.35ct | Asscher | D | VS1 | Good
From $210
Compare at $357
IGISave 41.2%0.35ct | Asscher | E | VS1 | Ideal
From $205
Compare at $349
IGISave 41.1%0.36ct | Asscher | D | VS1 | Ideal
From $216
Compare at $367
IGISave 41.1%0.36ct | Asscher | E | VS1 | Very Good
From $211
Compare at $358
IGISave 40.5%0.37ct | Asscher | D | VVS1 | Good
From $272
Compare at $458
IGISave 40.8%0.37ct | Asscher | D | VVS2 | Very Good
From $246
Compare at $416
IGISave 40.7%0.38ct | Asscher | E | VVS2 | Very Good
From $228
Compare at $385
IGISave 40.7%0.38ct | Asscher | D | VS1 | Fair
From $228
Compare at $385
IGISave 40.7%0.38ct | Asscher | E | VVS2 | Excellent
From $228
Compare at $385
IGISave 40.7%0.38ct | Asscher | E | VVS2 | Good
From $228
Compare at $385
IGISave 41.5%0.39ct | Asscher | D | VS2 | Very Good
From $199
Compare at $340
IGISave 40.9%0.39ct | Asscher | D | VS1 | Excellent
From $234
Compare at $396
IGISave 40.6%0.39ct | Asscher | D | VVS2 | Ideal
From $260
Compare at $437
IGISave 40.9%0.39ct | Asscher | E | VVS2 | Ideal
From $234
Compare at $396
IGISave 58.9%0.39ct | Asscher | D | VS1 | Very Good
From $183
Compare at $446
IGISave 36.3%0.39ct | Asscher | D | IF | Ideal
From $297
Compare at $466
IGISave 57.6%0.4ct | Asscher | E | VVS1 | Very Good
From $200
Compare at $471
IGISave 58.1%0.4ct | Asscher | E | VVS2 | Very Good
From $194
Compare at $463
IGISave 49%0.4ct | Asscher | D | VVS2 | Ideal
From $235
Compare at $461
IGISave 58.1%0.4ct | Asscher | D | VVS2 | Very Good
From $194
Compare at $463
IGISave 58.1%0.4ct | Asscher | D | VVS2 | Very Good
From $194
Compare at $463
IGISave 58.6%0.4ct | Asscher | D | VS1 | Very Good
From $188
Compare at $453
IGISave 49.3%0.4ct | Asscher | F | VS1 | Ideal
From $192
Compare at $379
IGISave 58.6%0.4ct | Asscher | E | VS1 | Good
From $188
Compare at $453
IGISave 58.6%0.4ct | Asscher | E | VS1 | Very Good
From $188
Compare at $453
IGISave 61.8%0.4ct | Asscher | E | VS2 | Very Good
From $180
Compare at $470
IGISave 58.6%0.4ct | Asscher | D | VS1 | Very Good
From $188
Compare at $453
IGISave 14.6%0.4ct | Asscher | D | VS2 | Very Good
From $174
Compare at $204
IGISave 49.5%0.4ct | Asscher | E | VS1 | Very Good
From $200
Compare at $396
IGISave 53.7%0.4ct | Asscher | D | VS1 | Very Good
From $264
Compare at $570
IGISave 58.6%0.4ct | Asscher | D | VS1 | Very Good
From $188
Compare at $453
IGISave 58.1%0.4ct | Asscher | D | VVS2 | Very Good
From $194
Compare at $463
IGISave 58.1%0.4ct | Asscher | E | VVS2 | Very Good
From $194
Compare at $463
IGISave 49.5%0.4ct | Asscher | E | VS1 | Ideal
From $200
Compare at $396
IGISave 49.1%0.4ct | Asscher | D | VS1 | Ideal
From $206
Compare at $405
IGISave 58.1%0.4ct | Asscher | D | VVS2 | Very Good
From $194
Compare at $463
IGISave 59.8%0.4ct | Asscher | D | VVS2 | Very Good
From $235
Compare at $585
IGISave 50.3%0.4ct | Asscher | D | VS2 | Ideal
From $174
Compare at $350
IGISave 14.3%0.4ct | Asscher | D | VVS2 | Very Good
From $235
Compare at $274
IGISave 49.3%0.41ct | Asscher | D | VS1 | Ideal
From $211
Compare at $416
IGISave 57.8%0.41ct | Asscher | E | VVS2 | Very Good
From $199
Compare at $470
IGISave 49.3%0.41ct | Asscher | D | VS1 | Ideal
From $211
Compare at $416
IGISave 52.6%0.41ct | Asscher | D | VVS2 | Very Good
From $285
Compare at $602
IGISave 53.3%0.41ct | Asscher | D | VS1 | Very Good
From $271
Compare at $580
IGISave 58.5%0.41ct | Asscher | F | VVS2 | Good
From $188
Compare at $454
Entry pricing in this category starts around $138.
What to Know When Shopping for 0.4 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,904 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 $224 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.
Frequently Asked Questions
We currently track 16,316 comparable stones in this segment. Prices start around $138 and go up to $3,042.
Based on the latest market data, the average asking price is about $247 with a median around $224.
The observed spread is roughly $2,904 across tracked listings, which is about 95.5% 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 $224, 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 $2,904 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.
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