3.9 Carat Oval Lab Grown Diamond Prices Comparison
As of May 2026, 3.9 carat oval lab grown diamonds usually range from $570 to $24,479, with an average price of $3,285.In the last month, prices for these diamonds are down 5.3%.Compare 346 verified listings across 8 retailers tracked by CaratRadar.
3.9 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 346 verified 3.9-carat oval lab grown diamonds listed across 8 online retailers. Prices in this segment range from $570 to $24,479, with an average asking price of $3,285 and a median of $2,308.
The price spread of $23,909 (97.7% 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.
346 diamonds tracked in this segment
Price range: $570 to $24,479
Average price: $3,285
Median price: $2,308
Available across 8 retailers
Savings potential: up to 97.7%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
346
$570
$3,285
$2,308
$24,479
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 23.2%IGI | 3.98ct | Oval | G | VS1 | Ideal
From $622
Compare at $810
Save 23.2%IGI | 3.97ct | Oval | G | VS1 | Excellent
From $647
Compare at $842
Save 51.8%IGI | 3.97ct | Oval | G | VS1 | Excellent
From $647
Compare at $1,341
Save 71.2%IGI | 3.91ct | Oval | D | VS2 | Very Good
From $722
Compare at $2,507
Save 75.7%IGI | 3.91ct | Oval | F | VS1 | Ideal
From $751
Compare at $3,085
Save 75.6%IGI | 3.93ct | Oval | F | VS1 | Ideal
From $755
Compare at $3,100
Save 75.7%IGI | 3.94ct | Oval | F | VS1 | Excellent
From $757
Compare at $3,110
Save 75.7%IGI | 3.94ct | Oval | F | VS1 | Ideal
From $757
Compare at $3,110
Save 75.7%IGI | 3.96ct | Oval | F | VS1 | Ideal
From $760
Compare at $3,125
Save 75.7%IGI | 3.96ct | Oval | F | VS1 | Ideal
From $760
Compare at $3,125
Save 75.7%IGI | 3.97ct | Oval | F | VS1 | Ideal
From $762
Compare at $3,135
Save 74.4%IGI | 3.93ct | Oval | F | VS1 | Excellent
From $764
Compare at $2,985
IGI | 3.97ct | Oval | F | VS1 | Excellent
From $771
Compare at $989
IGI | 3.97ct | Oval | F | VS1 | Very Good
From $771
Compare at $989
Save 64.9%IGI | 3.95ct | Oval | E | VS2 | Excellent
From $772
Compare at $2,197
Save 75.4%IGI | 3.98ct | Oval | F | VS1 | Excellent
From $774
Compare at $3,140
Save 64.9%IGI | 3.96ct | Oval | E | VS2 | Excellent
From $774
Compare at $2,207
Save 22%IGI | 3.99ct | Oval | F | VS1 | Excellent
From $775
Compare at $994
Save 66.6%IGI | 3.9ct | Oval | E | VS1 | Very Good
From $779
Compare at $2,330
Save 70.5%IGI | 3.96ct | Oval | G | VS1 | Very Good
From $780
Compare at $2,640
Save 22%IGI | 3.97ct | Oval | F | VS1 | Excellent
From $780
Compare at $1,000
Save 22%IGI | 3.97ct | Oval | F | VS1 | Ideal
From $780
Compare at $1,000
Save 75.1%IGI | 3.97ct | Oval | F | VS1 | Ideal
From $780
Compare at $3,135
Save 22%IGI | 3.97ct | Oval | F | VS1 | Excellent
From $780
Compare at $1,000
Save 64.2%IGI | 3.91ct | Oval | F | VS1 | Excellent
From $781
Compare at $2,183
Save 74.1%IGI | 3.98ct | Oval | F | VS1 | Excellent
From $782
Compare at $3,020
Save 75.1%IGI | 3.99ct | Oval | F | VS1 | Excellent
From $784
Compare at $3,150
Save 75.7%IGI | 3.96ct | Oval | H | VS2 | Excellent
From $784
Compare at $3,220
Save 75.5%IGI | 3.96ct | Oval | E | VS2 | Ideal
From $785
Compare at $3,205
Save 75.8%IGI | 3.91ct | Oval | E | VS1 | Excellent
From $786
Compare at $3,245
Save 75.8%IGI | 3.91ct | Oval | E | VS1 | Excellent
From $786
Compare at $3,245
Save 65.2%IGI | 3.98ct | Oval | F | VS1 | Excellent
From $786
Compare at $2,257
Save 75%IGI | 3.99ct | Oval | F | VS1 | Ideal
From $789
Compare at $3,150
Save 74.8%IGI | 3.97ct | Oval | F | VS1 | Ideal
From $789
Compare at $3,135
IGI | 3.93ct | Oval | G | VS2 | Excellent
From $789
Compare at $943
Save 65.2%IGI | 3.99ct | Oval | F | VS1 | Excellent
From $789
Compare at $2,270
Save 66.5%IGI | 3.92ct | Oval | F | VVS2 | Excellent
From $792
Compare at $2,365
Save 73.8%IGI | 3.99ct | Oval | F | VS1 | Excellent
From $793
Compare at $3,030
Save 74.8%IGI | 3.99ct | Oval | F | VS1 | Excellent
From $793
Compare at $3,150
Save 66%IGI | 3.9ct | Oval | F | VVS2 | Excellent
From $795
Compare at $2,341
Save 73%IGI | 3.98ct | Oval | E | VS2 | Very Good
From $795
Compare at $2,940
Save 76.3%IGI | 3.91ct | Oval | E | VS1 | Excellent
From $795
Compare at $3,360
Save 72.9%IGI | 3.9ct | Oval | E | VS2 | Very Good
From $796
Compare at $2,941
IGI | 3.96ct | Oval | F | VVS2 | Excellent
From $796
Compare at $800
Save 72.9%IGI | 3.9ct | Oval | E | VS2 | Excellent
From $796
Compare at $2,941
Save 66%IGI | 3.91ct | Oval | E | VS1 | Ideal
From $798
Compare at $2,346
IGI | 3.97ct | Oval | F | VVS2 | Excellent
From $798
Compare at $802
IGI | 3.97ct | Oval | F | VVS2 | Very Good
From $798
Compare at $802
IGI | 3.97ct | Oval | F | VVS2 | Excellent
From $798
Compare at $802
IGI | 3.99ct | Oval | F | VVS2 | Excellent
From $802
Compare at $3,910
Entry pricing in this category starts around $570.
What to Know When Shopping for 3.9 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $23,909 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 $2,308 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 346 comparable stones in this segment. Prices start around $570 and go up to $24,479.
Based on the latest market data, the average asking price is about $3,285 with a median around $2,308.
The observed spread is roughly $23,909 across tracked listings, which is about 97.7% 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 $3,285. The median price is $2,308, 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 8 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 $23,909 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 3.9 carat Oval diamonds.