0.4 Carat Oval Lab Grown Diamond Prices Comparison
As of April 2026, 0.4 carat oval lab grown diamonds usually range from $103 to $1,258, with an average price of $389.In the last month, prices for these diamonds are down 0.8%.Compare 639 verified listings across 4 retailers tracked by CaratRadar.
0.4 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 639 verified 0.4-carat oval lab grown diamonds listed across 4 online retailers. Prices in this segment range from $103 to $1,258, with an average asking price of $389 and a median of $375.
The price spread of $1,155 (91.8% 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.
639 diamonds tracked in this segment
Price range: $103 to $1,258
Average price: $389
Median price: $375
Available across 4 retailers
Savings potential: up to 91.8%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
639
$103
$389
$375
$1,258
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 24.3%IGI | 0.41ct | Oval | D | SI1 | Very Good
From $250
Compare at $330
IGI | 0.41ct | Oval | E | VVS2 | Good
From $1,540
Save 33.2%IGI | 0.41ct | Oval | G | VVS2 | Ideal
From $261
Compare at $390
IGI | 0.41ct | Oval | H | VS1 | Good
From $367
Compare at $380
IGI | 0.41ct | Oval | H | VS1 | Very Good
From $367
Compare at $380
Save 33.2%IGI | 0.41ct | Oval | F | VS1 | Ideal
From $261
Compare at $390
IGI | 0.41ct | Oval | H | VS1 | Ideal
From $367
Compare at $380
IGI | 0.41ct | Oval | D | VVS1 | Ideal
From $315
Compare at $332
IGI | 0.41ct | Oval | D | VS1 | Good
From $252
Compare at $270
Save 26.5%IGI | 0.41ct | Oval | D | VS1 | Ideal
From $308
Compare at $419
Save 26.5%IGI | 0.41ct | Oval | D | VS1 | Ideal
From $308
Compare at $419
Save 31.4%IGI | 0.41ct | Oval | D | VVS1 | Very Good
From $254
Compare at $370
IGI | 0.41ct | Oval | E | VVS2 | Very Good
From $232
Compare at $254
Save 30.1%IGI | 0.41ct | Oval | G | VVS2 | Ideal
From $246
Compare at $352
Save 43.5%IGI | 0.41ct | Oval | E | VVS2 | Very Good
From $209
Compare at $370
Save 26.3%IGI | 0.41ct | Oval | D | VS1 | Very Good
From $264
Compare at $359
Save 33.9%IGI | 0.41ct | Oval | E | SI1 | Very Good
From $204
Compare at $308
Save 33.2%IGI | 0.41ct | Oval | D | VVS1 | Very Good
From $254
Compare at $380
Save 16.6%IGI | 0.41ct | Oval | D | VVS1 | Very Good
From $254
Compare at $304
Save 28.4%IGI | 0.41ct | Oval | G | VVS1 | Ideal
From $271
Compare at $378
Save 14.3%IGI | 0.41ct | Oval | D | VVS2 | Very Good
From $232
Compare at $271
Save 46.4%IGI | 0.41ct | Oval | E | VS2 | Ideal
From $193
Compare at $360
Save 46.5%IGI | 0.41ct | Oval | D | VS1 | Very Good
From $198
Compare at $370
Save 46.5%IGI | 0.41ct | Oval | D | VS1 | Good
From $198
Compare at $370
IGI | 0.41ct | Oval | D | VS1 | Excellent
From $232
Compare at $250
Save 39%IGI | 0.41ct | Oval | D | VS1 | Ideal
From $232
Compare at $380
Save 31.4%IGI | 0.41ct | Oval | D | VVS1 | Very Good
From $254
Compare at $370
Save 36.9%IGI | 0.41ct | Oval | E | VS2 | Good
From $240
Compare at $380
Save 32%IGI | 0.41ct | Oval | E | VS1 | Very Good
From $224
Compare at $329
IGI | 0.42ct | Oval | E | VVS1 | Ideal
From $302
Compare at $318
IGI | 0.42ct | Oval | H | VS1 | Ideal
From $374
Compare at $380
Save 35.6%IGI | 0.42ct | Oval | E | VS1 | Very Good
From $347
Compare at $539
Save 37.3%IGI | 0.42ct | Oval | I | VS1 | Ideal
From $232
Compare at $370
Save 40%IGI | 0.42ct | Oval | E | VS2 | Ideal
From $278
Compare at $464
Save 26.5%IGI | 0.42ct | Oval | D | VS1 | Ideal
From $315
Compare at $429
Save 20.8%IGI | 0.42ct | Oval | E | VS2 | Excellent
From $208
Compare at $262
Save 26.4%IGI | 0.42ct | Oval | F | VS2 | Ideal
From $305
Compare at $414
Save 32.7%IGI | 0.42ct | Oval | D | VVS1 | Very Good
From $276
Compare at $410
Save 34.3%IGI | 0.42ct | Oval | D | VVS1 | Excellent
From $276
Compare at $420
IGI | 0.42ct | Oval | E | VS1 | Good
From $235
Compare at $252
IGI | 0.42ct | Oval | D | VVS1 | Ideal
From $319
Compare at $353
IGI | 0.42ct | Oval | D | VS1 | Very Good
From $216
Compare at $236
IGI | 0.42ct | Oval | D | VVS2 | Ideal
From $258
Compare at $283
Save 31.4%IGI | 0.42ct | Oval | E | VVS2 | Very Good
From $231
Compare at $337
Save 36%IGI | 0.42ct | Oval | D | VS1 | Ideal
From $256
Compare at $400
IGI | 0.42ct | Oval | D | VVS2 | Very Good
From $258
Compare at $283
Save 43.5%IGI | 0.42ct | Oval | H | VVS1 | Very Good
From $209
Compare at $370
Save 43.1%IGI | 0.42ct | Oval | D | VVS2 | Fair
From $222
Compare at $390
Save 45.7%IGI | 0.42ct | Oval | F | VVS2 | Very Good
From $201
Compare at $370
Save 30.2%IGI | 0.42ct | Oval | G | VS1 | Ideal
From $246
Compare at $352
Entry pricing in this category starts around $103.
What to Know When Shopping for 0.4 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,155 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 $375 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.
- Oval diamonds can appear larger than rounds of the same carat weight due to their elongated face-up area. Watch for the bow-tie effect in lower-quality cuts.
Frequently Asked Questions
We currently track 639 comparable stones in this segment. Prices start around $103 and go up to $1,258.
Based on the latest market data, the average asking price is about $389 with a median around $375.
The observed spread is roughly $1,155 across tracked listings, which is about 91.8% 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 $375, 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 $1,155 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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Tracking Lab Grown inventory for 0.4 carat Oval diamonds.