0.4 Carat Oval Lab Grown Diamond Prices Comparison
As of May 2026, 0.4 carat oval lab grown diamonds usually range from $90 to $1,169, with an average price of $356.In the last month, prices for these diamonds are down 5.1%.Compare 962 verified listings across 5 retailers tracked by CaratRadar.
0.4 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 962 verified 0.4-carat oval lab grown diamonds listed across 5 online retailers. Prices in this segment range from $90 to $1,169, with an average asking price of $356 and a median of $329.
The price spread of $1,079 (92.3% 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.
962 diamonds tracked in this segment
Price range: $90 to $1,169
Average price: $356
Median price: $329
Available across 5 retailers
Savings potential: up to 92.3%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
962
$90
$356
$329
$1,169
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 66.3%IGI | 0.43ct | Oval | D | VS1 | Very Good
From $90
Compare at $267
Save 66.5%IGI | 0.46ct | Oval | E | VS1 | Very Good
From $90
Compare at $269
Save 66.3%IGI | 0.43ct | Oval | E | VVS2 | Good
From $90
Compare at $267
Save 66.3%IGI | 0.43ct | Oval | E | VVS2 | Good
From $90
Compare at $267
Save 66.3%IGI | 0.44ct | Oval | E | VVS2 | Very Good
From $92
Compare at $273
Save 76%IGI | 0.46ct | Oval | D | VS1 | Very Good
From $96
Compare at $400
Save 66.6%IGI | 0.49ct | Oval | E | VS1 | Good
From $96
Compare at $287
Save 66.3%IGI | 0.47ct | Oval | D | VS1 | Very Good
From $98
Compare at $291
Save 75.5%IGI | 0.45ct | Oval | D | VS1 | Excellent
From $98
Compare at $400
Save 74.6%IGI | 0.45ct | Oval | D | VVS2 | Very Good
From $99
Compare at $390
Save 66.3%IGI | 0.45ct | Oval | D | VVS2 | Good
From $99
Compare at $294
Save 66.3%IGI | 0.45ct | Oval | D | VVS2 | Good
From $99
Compare at $294
Save 71.9%IGI | 0.41ct | Oval | E | VS2 | Ideal
From $101
Compare at $360
Save 58.4%IGI | 0.46ct | Oval | D | VVS2 | Very Good
From $101
Compare at $243
Save 66.4%IGI | 0.49ct | Oval | D | VS1 | Very Good
From $102
Compare at $304
Save 73.2%IGI | 0.44ct | Oval | E | VS1 | Very Good
From $102
Compare at $380
Save 66.4%IGI | 0.49ct | Oval | E | VVS2 | Very Good
From $102
Compare at $304
Save 71.9%IGI | 0.41ct | Oval | D | VS1 | Very Good
From $104
Compare at $370
Save 71.9%IGI | 0.41ct | Oval | D | VS1 | Good
From $104
Compare at $370
Save 74.6%IGI | 0.49ct | Oval | E | VS1 | Very Good
From $104
Compare at $410
Save 55.9%IGI | 0.48ct | Oval | D | VS1 | Very Good
From $104
Compare at $236
Save 74.4%IGI | 0.48ct | Oval | D | VVS2 | Very Good
From $105
Compare at $410
Save 74.4%IGI | 0.48ct | Oval | D | VVS2 | Very Good
From $105
Compare at $410
Save 71.6%IGI | 0.42ct | Oval | D | VS2 | Very Good
From $105
Compare at $370
Save 66.6%IGI | 0.48ct | Oval | D | VVS2 | Very Good
From $105
Compare at $314
Save 68.1%IGI | 0.43ct | Oval | E | VS1 | Very Good
From $106
Compare at $332
Save 74.3%IGI | 0.49ct | Oval | D | VVS2 | Very Good
From $108
Compare at $420
Save 74.3%IGI | 0.49ct | Oval | D | VVS2 | Good
From $108
Compare at $420
Save 66.4%IGI | 0.49ct | Oval | D | VVS2 | Good
From $108
Compare at $321
Save 73.7%IGI | 0.49ct | Oval | D | VS1 | Very Good
From $108
Compare at $410
Save 73.7%IGI | 0.49ct | Oval | E | VS2 | Ideal
From $108
Compare at $410
Save 58.5%IGI | 0.47ct | Oval | D | VS1 | Good
From $109
Compare at $263
Save 71.3%IGI | 0.45ct | Oval | E | VS2 | Ideal
From $109
Compare at $380
Save 67.3%IGI | 0.48ct | Oval | F | VS2 | Very Good
From $109
Compare at $333
Save 58.7%IGI | 0.49ct | Oval | D | VS1 | Ideal
From $111
Compare at $269
Save 58.7%IGI | 0.46ct | Oval | D | VS1 | Ideal
From $111
Compare at $269
Save 67.7%IGI | 0.42ct | Oval | H | VVS1 | Very Good
From $111
Compare at $344
Save 71.5%IGI | 0.45ct | Oval | E | VS1 | Very Good
From $111
Compare at $390
Save 72.9%IGI | 0.49ct | Oval | F | VS2 | Very Good
From $111
Compare at $410
Save 39.6%IGI | 0.45ct | Oval | E | VS2 | Very Good
From $111
Compare at $184
Save 68%IGI | 0.43ct | Oval | D | VS1 | Ideal
From $112
Compare at $350
Save 67.3%IGI | 0.44ct | Oval | D | VS1 | Very Good
From $112
Compare at $343
Save 67.3%IGI | 0.44ct | Oval | D | VS1 | Very Good
From $112
Compare at $343
Save 67.3%IGI | 0.44ct | Oval | D | VS1 | Very Good
From $112
Compare at $343
Save 58.7%IGI | 0.49ct | Oval | D | VS1 | Very Good
From $112
Compare at $271
Save 71.3%IGI | 0.47ct | Oval | F | VVS2 | Very Good
From $112
Compare at $390
Save 71.3%IGI | 0.47ct | Oval | F | VVS2 | Very Good
From $112
Compare at $390
Save 71.3%IGI | 0.47ct | Oval | F | VVS2 | Very Good
From $112
Compare at $390
Save 71.8%IGI | 0.46ct | Oval | E | VS1 | Excellent
From $113
Compare at $400
Save 45.8%IGI | 0.45ct | Oval | D | VS1 | Good
From $113
Compare at $209
Entry pricing in this category starts around $90.
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 $1,079 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 $329 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 962 comparable stones in this segment. Prices start around $90 and go up to $1,169.
Based on the latest market data, the average asking price is about $356 with a median around $329.
The observed spread is roughly $1,079 across tracked listings, which is about 92.3% 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 $356. The median price is $329, 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 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 $1,079 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.
0.3 Carat Oval Lab Grown Diamond Prices
0.5 Carat Oval Lab Grown Diamond Prices
0.2 Carat Oval Lab Grown Diamond Prices
0.6 Carat Oval Lab Grown Diamond Prices
0.7 Carat Oval Lab Grown Diamond Prices
0.8 Carat Oval Lab Grown Diamond Prices
0.9 Carat Oval Lab Grown Diamond Prices
0.4 Carat Round Lab Grown Diamond Prices
0.4 Carat Pear Lab Grown Diamond Prices
0.4 Carat Marquise Lab Grown Diamond Prices
0.4 Carat Emerald Lab Grown Diamond Prices
0.4 Carat Radiant Lab Grown Diamond Prices
Tracking Lab Grown inventory for 0.4 carat Oval diamonds.