0.4 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 0.4 carat round lab grown diamonds usually range from $101 to $880, with an average price of $327.In the last month, prices for these diamonds are down 0.5%.Compare 5,695 verified listings across 5 retailers tracked by CaratRadar.
0.4 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 5,695 verified 0.4-carat round lab grown diamonds listed across 5 online retailers. Prices in this segment range from $101 to $880, with an average asking price of $327 and a median of $324.
The price spread of $779 (88.5% 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.
5,695 diamonds tracked in this segment
Price range: $101 to $880
Average price: $327
Median price: $324
Available across 5 retailers
Savings potential: up to 88.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
5,695
$101
$327
$324
$880
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GCAL | 0.41ct | Round | E | VVS1 | Very Good
From $192
Compare at $390
GIA | 0.41ct | Round | D | SI1 | Excellent
From $259
Compare at $285
GIA | 0.41ct | Round | D | VVS2 | Very Good
From $326
Compare at $341
IGI | 0.41ct | Round | E | VS1 | Ideal
From $1,502
Compare at $1,505
IGI | 0.41ct | Round | D | VS1 | Very Good
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Very Good
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | E | VS1 | Ideal
From $1,502
Compare at $1,505
IGI | 0.41ct | Round | E | VS1 | Very Good
From $1,502
Compare at $1,505
IGI | 0.41ct | Round | G | VS1 | Very Good
From $1,402
Compare at $1,405
IGI | 0.41ct | Round | D | VS1 | Very Good
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Very Good
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Ideal
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Ideal
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Ideal
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS1 | Ideal
From $1,603
Compare at $1,605
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 24%IGI | 0.41ct | Round | D | VVS1 | Very Good
From $408
Compare at $537
Save 41.4%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $369
Compare at $630
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 16.5%IGI | 0.41ct | Round | D | SI1 | Excellent
From $238
Compare at $285
IGI | 0.41ct | Round | E | VS1 | Ideal
From $294
Compare at $307
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 11.4%IGI | 0.41ct | Round | E | VS2 | Excellent
From $253
Compare at $285
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
Save 11.4%IGI | 0.41ct | Round | E | VS2 | Ideal
From $253
Compare at $285
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
Save 23.5%IGI | 0.41ct | Round | D | VVS1 | Ideal
From $282
Compare at $368
IGI | 0.41ct | Round | D | VS2 | Ideal
From $258
Compare at $266
Save 19.1%IGI | 0.41ct | Round | D | VVS2 | Ideal
From $258
Compare at $319
IGI | 0.41ct | Round | D | VS1 | Ideal
From $266
Compare at $279
Save 38.9%IGI | 0.41ct | Round | D | SI1 | Excellent
From $165
Compare at $270
Save 38.9%IGI | 0.41ct | Round | D | SI1 | Ideal
From $165
Compare at $270
Entry pricing in this category starts around $101.
What to Know When Shopping for 0.4 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $779 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 $324 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.
- 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 5,695 comparable stones in this segment. Prices start around $101 and go up to $880.
Based on the latest market data, the average asking price is about $327 with a median around $324.
The observed spread is roughly $779 across tracked listings, which is about 88.5% 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 $324, 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 5 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 $779 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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