0.4 Carat Lab Grown Diamond Prices Comparison
As of April 2026, the average price of a 0.4 carat lab grown diamond is $377.0.4 carat diamonds can cost anywhere from $101 to $1,542 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 0.9%.Compare 6,284 verified listings across 6 retailers in the tables below.
0.4 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 6,284 verified 0.4-carat lab grown diamonds listed across 6 online retailers. Prices in this segment range from $101 to $1,542, with an average asking price of $377 and a median of $364.
The price spread of $1,441 (93.5% 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.
6,284 diamonds tracked in this segment
Price range: $101 to $1,542
Average price: $377
Median price: $364
Available across 6 retailers
Savings potential: up to 93.5%
Price Range Overview
As of Apr 13, 2026Real market range for this carat, shape, and diamond type.
6,284
$101
$377
$364
$1,542
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.
IGI | 0.41ct | Asscher | F | VVS2 | Good
From $176
Compare at $187
Save 36.6%IGI | 0.41ct | Asscher | D | VVS2 | Very Good
From $241
Compare at $380
Save 45.6%IGI | 0.41ct | Asscher | D | VS1 | Good
From $196
Compare at $360
Save 43%IGI | 0.41ct | Asscher | D | VS1 | Ideal
From $211
Compare at $370
IGI | 0.41ct | Asscher | E | VVS2 | Very Good
From $180
Compare at $191
Save 43%IGI | 0.41ct | Asscher | D | VS1 | Ideal
From $211
Compare at $370
Save 36.6%IGI | 0.41ct | Asscher | D | VVS2 | Ideal
From $241
Compare at $380
Save 43%IGI | 0.41ct | Asscher | D | VS1 | Ideal
From $211
Compare at $370
Save 36.6%IGI | 0.41ct | Asscher | D | VVS2 | Ideal
From $241
Compare at $380
Save 26.5%IGI | 0.41ct | Asscher | D | VVS2 | Very Good
From $285
Compare at $388
Save 36.8%IGI | 0.42ct | Asscher | D | VVS2 | Very Good
From $240
Compare at $380
Save 43.2%IGI | 0.42ct | Asscher | D | VS1 | Ideal
From $216
Compare at $380
IGI | 0.42ct | Asscher | E | VS1 | Good
From $180
Compare at $192
IGI | 0.42ct | Asscher | E | VS2 | Very Good
From $214
Compare at $229
IGI | 0.42ct | Asscher | D | VVS2 | Very Good
From $184
Compare at $196
Save 43.2%IGI | 0.42ct | Asscher | E | VS1 | Ideal
From $210
Compare at $370
Save 36.7%IGI | 0.42ct | Asscher | D | VVS2 | Ideal
From $247
Compare at $390
Save 43.2%IGI | 0.42ct | Asscher | E | VS1 | Very Good
From $210
Compare at $370
Save 43.4%IGI | 0.43ct | Asscher | E | VS1 | Ideal
From $215
Compare at $380
Save 42.1%IGI | 0.44ct | Asscher | E | VS1 | Ideal
From $220
Compare at $380
Save 35.3%IGI | 0.44ct | Asscher | D | VVS2 | Very Good
From $259
Compare at $400
Save 26.5%IGI | 0.45ct | Asscher | D | VVS2 | Very Good
From $279
Compare at $379
Save 24.6%IGI | 0.46ct | Asscher | D | VVS2 | Good
From $221
Compare at $293
Save 40.5%IGI | 0.46ct | Asscher | E | VVS2 | Ideal
From $238
Compare at $400
Save 31.1%IGI | 0.47ct | Asscher | D | VVS2 | Excellent
From $303
Compare at $440
Save 30.8%IGI | 0.47ct | Asscher | E | VVS2 | Ideal
From $284
Compare at $410
Save 41.3%IGI | 0.47ct | Asscher | E | VS1 | Good
From $235
Compare at $400
IGI | 0.47ct | Asscher | F | VVS2 | Very Good
From $282
Compare at $301
Save 14.3%IGI | 0.47ct | Asscher | E | VS1 | Very Good
From $225
Compare at $263
Save 40.7%IGI | 0.48ct | Asscher | E | VVS2 | Very Good
From $249
Compare at $420
Save 49%IGI | 0.48ct | Asscher | D | VS2 | Very Good
From $209
Compare at $410
Save 31.7%IGI | 0.48ct | Asscher | E | VS1 | Ideal
From $280
Compare at $410
Save 23.9%IGI | 0.49ct | Asscher | D | VS1 | Good
From $268
Compare at $352
Save 39%IGI | 0.49ct | Asscher | D | VVS1 | Excellent
From $390
Compare at $640
Save 39%IGI | 0.49ct | Asscher | D | VS1 | Excellent
From $384
Compare at $630
IGI | 0.49ct | Asscher | E | VVS2 | Good
From $298
Compare at $318
Save 52.1%IGI | 0.49ct | Asscher | E | VVS2 | Very Good
From $201
Compare at $420
Save 37.7%IGI | 0.49ct | Asscher | D | VVS2 | Very Good
From $274
Compare at $440
Save 41.4%IGI | 0.49ct | Asscher | D | VS1 | Very Good
From $252
Compare at $430
Save 14.1%IGI | 0.41ct | Cushion | D | VS1 | Ideal
From $268
Compare at $312
IGI | 0.41ct | Cushion | D | VVS2 | Excellent
From $272
Compare at $286
IGI | 0.41ct | Cushion | D | VVS2 | Excellent
From $272
Compare at $286
IGI | 0.41ct | Cushion | D | VVS1 | Ideal
From $319
Compare at $336
IGI | 0.41ct | Cushion | D | VVS2 | Excellent
From $272
Compare at $286
Save 14.1%IGI | 0.41ct | Cushion | D | VS1 | Ideal
From $268
Compare at $312
IGI | 0.41ct | Cushion | D | VVS2 | Excellent
From $272
Compare at $286
Save 37.7%IGI | 0.41ct | Cushion | D | VVS2 | Very Good
From $218
Compare at $350
Save 34.9%IGI | 0.41ct | Cushion | D | VS1 | Ideal
From $241
Compare at $370
IGI | 0.41ct | Cushion | D | VS1 | Good
From $256
Compare at $275
Save 14%IGI | 0.42ct | Cushion | D | VS2 | Ideal
From $271
Compare at $315
Entry pricing in this category starts around $101.
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 $1,441 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 $364 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 6,284 comparable stones in this segment. Prices start around $101 and go up to $1,542.
Based on the latest market data, the average asking price is about $377 with a median around $364.
The observed spread is roughly $1,441 across tracked listings, which is about 93.5% 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 $364, 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 $1,441 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 Lab Grown Diamond Prices
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0.4 Carat Asscher Lab Grown Diamond Prices
Tracking Lab Grown inventory for 0.4 carat all-shape diamonds.