4.2 Carat Oval Lab Grown Diamond Prices Comparison
As of February 2026, 4.2 carat oval lab grown diamonds usually range from $973 to $36,830, with an average price of $4,026.In the last month, prices for these diamonds are down 1.6%.Compare 323 verified listings across 9 retailers tracked by CaratRadar.
4.2 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 323 verified 4.2-carat oval lab grown diamonds listed across 9 online retailers. Prices in this segment range from $973 to $36,830, with an average asking price of $4,026 and a median of $1,845.
The price spread of $35,857 (97.4% 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.
323 diamonds tracked in this segment
Price range: $973 to $36,830
Average price: $4,026
Median price: $1,845
Available across 9 retailers
Savings potential: up to 97.4%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
323
$973
$4,026
$1,845
$36,830
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 84.9%4.16ct | Oval | G | VS1 | Ideal
From $1,133
Compare at $7,520
IGISave 83.2%4.16ct | Oval | H | VS2 | Ideal
From $994
Compare at $5,920
IGISave 46%4.16ct | Oval | I | VS1 | Ideal
From $1,440
Compare at $2,668
IGISave 40.5%4.16ct | Oval | H | VS1 | Ideal
From $1,550
Compare at $2,604
IGISave 82.4%4.16ct | Oval | G | IF | Ideal
From $6,650
Compare at $37,850
IGISave 84.7%4.16ct | Oval | G | VS2 | Excellent
From $1,057
Compare at $6,890
GIASave 31%4.16ct | Oval | D | VVS1 | Ideal
From $8,879
Compare at $12,860
GIASave 80.8%4.16ct | Oval | G | VS1 | Ideal
From $1,946
Compare at $10,160
IGISave 83.4%4.16ct | Oval | H | VS1 | Ideal
From $1,042
Compare at $6,280
IGISave 83.4%4.16ct | Oval | H | VS1 | Ideal
From $1,042
Compare at $6,280
IGISave 84.7%4.16ct | Oval | G | VS2 | Excellent
From $1,057
Compare at $6,890
IGISave 83.4%4.16ct | Oval | D | VVS2 | Ideal
From $1,752
Compare at $10,570
IGISave 46.7%4.16ct | Oval | D | VVS1 | Very Good
From $7,985
Compare at $14,970
IGISave 83.6%4.16ct | Oval | E | VVS2 | Ideal
From $1,644
Compare at $10,050
IGISave 78.8%4.16ct | Oval | D | VVS1 | Good
From $5,248
Compare at $24,804
GIASave 55.4%4.16ct | Oval | E | VVS1 | Excellent
From $5,182
Compare at $11,620
IGISave 83.5%4.16ct | Oval | H | VVS2 | Ideal
From $1,071
Compare at $6,500
IGISave 84.5%4.16ct | Oval | G | VS1 | Ideal
From $1,163
Compare at $7,520
IGISave 40.5%4.16ct | Oval | H | VS1 | Ideal
From $1,550
Compare at $2,604
IGISave 83.8%4.16ct | Oval | G | VS1 | Excellent
From $973
Compare at $5,990
IGISave 81.6%4.16ct | Oval | F | VS2 | Ideal
From $1,010
Compare at $5,480
GIASave 72.9%4.16ct | Oval | E | VS1 | Excellent
From $4,145
Compare at $15,290
GIASave 77.6%4.16ct | Oval | D | VVS1 | Excellent
From $6,152
Compare at $27,406
GIASave 72.3%4.16ct | Oval | D | VVS1 | Excellent
From $8,785
Compare at $31,670
4.16ct | Oval | E | VS1 | Very Good
From $1,589
Compare at $9,870
IGISave 80.2%4.16ct | Oval | F | VS1 | Very Good
From $1,719
Compare at $8,680
IGISave 29%4.16ct | Oval | G | VS1 | Very Good
From $1,326
Compare at $1,866
IGISave 57.3%4.16ct | Oval | E | VS1 | Ideal
From $1,395
Compare at $3,270
4.16ct | Oval | VVS2 | Very Good
From $3,448
Compare at $9,915
IGISave 82.9%4.16ct | Oval | D | VVS2 | Ideal
From $2,036
Compare at $11,890
IGISave 81.4%4.16ct | Oval | D | IF | Ideal
From $7,585
Compare at $40,710
IGISave 25.4%4.16ct | Oval | E | VVS2 | Ideal
From $1,523
Compare at $2,042
IGISave 81.1%4.16ct | Oval | D | VS1 | Excellent
From $1,764
Compare at $9,318
GIASave 63.1%4.16ct | Oval | G | VS1 | Ideal
From $4,950
Compare at $13,420
GIASave 31.3%4.16ct | Oval | D | VVS1 | Excellent
From $13,450
Compare at $19,576
GIASave 83.5%4.16ct | Oval | D | VVS1 | Excellent
From $4,524
Compare at $27,406
IGI4.16ct | Oval | I | VS2 | Ideal
From $1,388
Compare at $1,395
IGISave 81.9%4.16ct | Oval | G | VS2 | Good
From $1,057
Compare at $5,850
IGISave 72.4%4.16ct | Oval | E | VVS2 | Ideal
From $4,085
Compare at $14,810
IGISave 81.8%4.16ct | Oval | D | VS1 | Very Good
From $1,912
Compare at $10,480
IGISave 73.7%4.16ct | Oval | E | VVS1 | Very Good
From $4,553
Compare at $17,280
IGISave 85.3%4.17ct | Oval | F | VS1 | Excellent
From $1,089
Compare at $7,400
IGISave 74.9%4.17ct | Oval | G | VS2 | Ideal
From $1,751
Compare at $6,970
GIASave 79.9%4.17ct | Oval | D | IF | Ideal
From $9,775
Compare at $48,700
GIASave 69.3%4.17ct | Oval | G | VS1 | Ideal
From $4,962
Compare at $16,140
GIASave 37.1%4.17ct | Oval | E | VVS2 | Ideal
From $9,466
Compare at $15,060
IGISave 84.4%4.17ct | Oval | G | VVS2 | Ideal
From $1,176
Compare at $7,540
IGISave 81.7%4.17ct | Oval | G | VS2 | Excellent
From $981
Compare at $5,360
IGISave 80.7%4.17ct | Oval | G | VVS2 | Excellent
From $1,647
Compare at $8,550
GIASave 80.8%4.17ct | Oval | G | VS2 | Ideal
From $1,919
Compare at $10,000
Entry pricing in this category starts around $973.
What to Know When Shopping for 4.2 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $35,857 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 $1,845 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 323 comparable stones in this segment. Prices start around $973 and go up to $36,830.
Based on the latest market data, the average asking price is about $4,026 with a median around $1,845.
The observed spread is roughly $35,857 across tracked listings, which is about 97.4% 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 $1,845, 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 9 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 $35,857 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 4.2 carat Oval diamonds.