3.4 Carat Round Lab Grown Diamond Prices Comparison
As of May 2026, 3.4 carat round lab grown diamonds usually range from $485 to $23,421, with an average price of $3,513.In the last month, prices for these diamonds are down 4.6%.Compare 551 verified listings across 10 retailers tracked by CaratRadar.
3.4 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 551 verified 3.4-carat round lab grown diamonds listed across 10 online retailers. Prices in this segment range from $485 to $23,421, with an average asking price of $3,513 and a median of $2,462.
The price spread of $22,936 (97.9% 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.
551 diamonds tracked in this segment
Price range: $485 to $23,421
Average price: $3,513
Median price: $2,462
Available across 10 retailers
Savings potential: up to 97.9%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
551
$485
$3,513
$2,462
$23,421
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 64.3%IGI | 3.49ct | Round | H | VVS2 | Ideal
From $555
Compare at $1,554
Save 71.9%IGI | 3.42ct | Round | E | VS1 | Ideal
From $641
Compare at $2,282
Save 54.4%IGI | 3.46ct | Round | F | VVS2 | Ideal
From $646
Compare at $1,417
Save 79.7%IGI | 3.4ct | Round | H | VVS2 | Ideal
From $649
Compare at $3,200
Save 63.6%IGI | 3.47ct | Round | F | VS2 | Ideal
From $653
Compare at $1,795
Save 63%IGI | 3.43ct | Round | G | VVS2 | Excellent
From $661
Compare at $1,788
Save 72.5%IGI | 3.41ct | Round | E | VS1 | Ideal
From $670
Compare at $2,436
Save 72.5%IGI | 3.42ct | Round | E | VS1 | Ideal
From $672
Compare at $2,443
Save 64.4%IGI | 3.41ct | Round | F | VVS2 | Ideal
From $673
Compare at $1,892
Save 64.4%IGI | 3.41ct | Round | F | VVS2 | Ideal
From $673
Compare at $1,892
Save 64.4%IGI | 3.41ct | Round | F | VVS2 | Ideal
From $673
Compare at $1,892
Save 65.2%IGI | 3.42ct | Round | E | VS1 | Ideal
From $682
Compare at $1,958
Save 68.2%IGI | 3.45ct | Round | E | VVS2 | Ideal
From $684
Compare at $2,149
Save 71.9%IGI | 3.41ct | Round | E | VVS2 | Ideal
From $685
Compare at $2,437
Save 76.2%IGI | 3.4ct | Round | H | VS1 | Ideal
From $690
Compare at $2,900
Save 76.1%IGI | 3.44ct | Round | E | SI1 | Ideal
From $692
Compare at $2,890
Save 71.9%IGI | 3.45ct | Round | E | VVS2 | Ideal
From $693
Compare at $2,466
Save 66.6%IGI | 3.41ct | Round | E | VVS2 | Excellent
From $696
Compare at $2,081
Save 66.6%IGI | 3.41ct | Round | E | VVS2 | Ideal
From $696
Compare at $2,081
Save 66.6%IGI | 3.42ct | Round | E | VVS2 | Ideal
From $698
Compare at $2,092
Save 66.7%IGI | 3.43ct | Round | E | VVS2 | Ideal
From $700
Compare at $2,105
Save 66.7%IGI | 3.43ct | Round | E | VVS2 | Ideal
From $700
Compare at $2,105
Save 66.7%IGI | 3.43ct | Round | E | VVS2 | Excellent
From $700
Compare at $2,105
Save 79.9%IGI | 3.44ct | Round | H | VVS2 | Ideal
From $701
Compare at $3,480
Save 66.9%IGI | 3.45ct | Round | E | VVS2 | Ideal
From $704
Compare at $2,128
Save 66.9%IGI | 3.45ct | Round | E | VVS2 | Ideal
From $704
Compare at $2,128
Save 62.5%IGI | 3.43ct | Round | F | VS1 | Excellent
From $705
Compare at $1,882
Save 67%IGI | 3.46ct | Round | E | VVS2 | Ideal
From $706
Compare at $2,139
Save 67%IGI | 3.46ct | Round | E | VVS2 | Ideal
From $706
Compare at $2,139
Save 67.1%IGI | 3.47ct | Round | E | VVS2 | Excellent
From $708
Compare at $2,152
Save 67.1%IGI | 3.47ct | Round | E | VVS2 | Excellent
From $708
Compare at $2,152
Save 67.1%IGI | 3.47ct | Round | E | VVS2 | Excellent
From $708
Compare at $2,152
Save 61.1%IGI | 3.4ct | Round | F | VS1 | Ideal
From $717
Compare at $1,841
Save 61.1%IGI | 3.4ct | Round | F | VS1 | Ideal
From $717
Compare at $1,841
Save 63.1%IGI | 3.49ct | Round | F | VS1 | Excellent
From $717
Compare at $1,944
Save 61.2%IGI | 3.41ct | Round | F | VS1 | Ideal
From $719
Compare at $1,851
Save 63.1%IGI | 3.41ct | Round | E | VS1 | Ideal
From $723
Compare at $1,960
Save 63.1%IGI | 3.42ct | Round | E | VS1 | Ideal
From $724
Compare at $1,960
Save 61.5%IGI | 3.44ct | Round | F | VS1 | Ideal
From $725
Compare at $1,881
Save 61.7%IGI | 3.46ct | Round | F | VS1 | Ideal
From $729
Compare at $1,903
Save 78.8%IGI | 3.4ct | Round | G | VS1 | Ideal
From $729
Compare at $3,440
Save 62.4%IGI | 3.45ct | Round | F | VVS2 | Excellent
From $732
Compare at $1,949
Save 62.4%IGI | 3.45ct | Round | F | VVS2 | Excellent
From $732
Compare at $1,949
Save 61.8%IGI | 3.48ct | Round | F | VS1 | Ideal
From $734
Compare at $1,923
Save 62.5%IGI | 3.46ct | Round | F | VVS2 | Ideal
From $734
Compare at $1,959
Save 63.7%IGI | 3.48ct | Round | E | VS1 | Excellent
From $739
Compare at $2,036
Save 63.7%IGI | 3.48ct | Round | E | VS1 | Excellent
From $739
Compare at $2,036
Save 62.8%IGI | 3.49ct | Round | F | VVS2 | Excellent
From $741
Compare at $1,991
Save 64.3%IGI | 3.41ct | Round | E | VVS2 | Ideal
From $743
Compare at $2,079
Save 44.7%IGI | 3.44ct | Round | G | VS1 | Excellent
From $746
Compare at $1,350
Entry pricing in this category starts around $485.
What to Know When Shopping for 3.4 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $22,936 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 $2,462 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 551 comparable stones in this segment. Prices start around $485 and go up to $23,421.
Based on the latest market data, the average asking price is about $3,513 with a median around $2,462.
The observed spread is roughly $22,936 across tracked listings, which is about 97.9% 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 $3,513. The median price is $2,462, 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 10 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 $22,936 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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