3.4 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 3.4 carat radiant lab grown diamonds usually range from $536 to $27,141, with an average price of $3,805.In the last month, prices for these diamonds are down 7.4%.Compare 140 verified listings across 8 retailers tracked by CaratRadar.
3.4 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 140 verified 3.4-carat radiant lab grown diamonds listed across 8 online retailers. Prices in this segment range from $536 to $27,141, with an average asking price of $3,805 and a median of $2,764.
The price spread of $26,605 (98.0% 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.
140 diamonds tracked in this segment
Price range: $536 to $27,141
Average price: $3,805
Median price: $2,764
Available across 8 retailers
Savings potential: up to 98.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
140
$536
$3,805
$2,764
$27,141
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 | 3.41ct | Radiant | E | VS1 | Very Good
From $624
Compare at $813
Save 78.4%IGI | 3.4ct | Radiant | E | VS1 | Ideal
From $630
Compare at $2,920
Save 23.2%IGI | 3.41ct | Radiant | E | VS1 | Ideal
From $632
Compare at $823
Save 70%IGI | 3.49ct | Radiant | F | VS1 | Excellent
From $632
Compare at $2,107
Save 78.4%IGI | 3.42ct | Radiant | E | VS1 | Ideal
From $634
Compare at $2,940
Save 78.4%IGI | 3.43ct | Radiant | E | VS1 | Ideal
From $636
Compare at $2,945
Save 77.7%IGI | 3.44ct | Radiant | E | VS1 | Excellent
From $638
Compare at $2,855
Save 78.4%IGI | 3.44ct | Radiant | E | VS1 | Ideal
From $638
Compare at $2,955
Save 23.2%IGI | 3.47ct | Radiant | E | VS1 | Very Good
From $643
Compare at $837
Save 77.6%IGI | 3.48ct | Radiant | E | VS1 | Excellent
From $645
Compare at $2,885
Save 24.8%IGI | 3.46ct | Radiant | E | VVS2 | Very Good
From $680
Compare at $904
Save 39.6%IGI | 3.47ct | Radiant | E | VVS2 | Very Good
From $682
Compare at $1,130
Save 24.7%IGI | 3.47ct | Radiant | E | VVS2 | Very Good
From $682
Compare at $906
Save 23.8%IGI | 3.49ct | Radiant | E | VVS2 | Very Good
From $694
Compare at $911
Save 46%IGI | 3.47ct | Radiant | E | VS1 | Excellent
From $695
Compare at $1,287
Save 65.8%IGI | 3.41ct | Radiant | D | VS1 | Very Good
From $717
Compare at $2,099
Save 72.4%IGI | 3.41ct | Radiant | FANCY | VS1 | Very Good
From $723
Compare at $2,620
Save 54.6%IGI | 3.42ct | Radiant | G | VS1 | Ideal
From $741
Compare at $1,631
Save 62.2%IGI | 3.49ct | Radiant | E | VS1 | Excellent
From $755
Compare at $1,995
Save 13.8%IGI | 3.45ct | Radiant | F | VVS2 | Very Good
From $763
Compare at $885
Save 52.8%IGI | 3.46ct | Radiant | H | VS1 | Ideal
From $765
Compare at $1,622
Save 61%IGI | 3.47ct | Radiant | E | VS1 | Very Good
From $767
Compare at $1,968
Save 62.2%IGI | 3.41ct | Radiant | E | VVS2 | Very Good
From $786
Compare at $2,079
Save 66.6%IGI | 3.49ct | Radiant | E | VS2 | Excellent
From $787
Compare at $2,356
Save 72.4%IGI | 3.49ct | Radiant | FANCY | VS2 | Very Good
From $795
Compare at $2,879
Save 72.4%IGI | 3.42ct | Radiant | FANCY | VVS2 | Very Good
From $802
Compare at $2,904
Save 65.3%IGI | 3.43ct | Radiant | D | VVS2 | Very Good
From $832
Compare at $2,400
Save 53.6%IGI | 3.4ct | Radiant | E | VS2 | Very Good
From $846
Compare at $1,824
Save 56.6%IGI | 3.41ct | Radiant | E | VS1 | Very Good
From $848
Compare at $1,952
Save 53.8%IGI | 3.42ct | Radiant | E | VS2 | Very Good
From $851
Compare at $1,843
Save 51.8%IGI | 3.42ct | Radiant | E | VS1 | Very Good
From $851
Compare at $1,765
Save 56.6%IGI | 3.42ct | Radiant | E | VS1 | Very Good
From $851
Compare at $1,963
Save 57%IGI | 3.45ct | Radiant | E | VS1 | Very Good
From $858
Compare at $1,995
Save 79.5%IGI | 3.46ct | Radiant | D | VVS2 | Ideal
From $858
Compare at $4,185
Save 79.5%IGI | 3.48ct | Radiant | D | VVS2 | Ideal
From $862
Compare at $4,210
IGI | 3.48ct | Radiant | D | VVS2 | Ideal
From $862
Compare at $872
Save 57.3%IGI | 3.48ct | Radiant | E | VS1 | Very Good
From $865
Compare at $2,028
IGI | 3.49ct | Radiant | D | VVS2 | Very Good
From $865
Compare at $4,220
Save 72.4%IGI | 3.4ct | Radiant | FANCY | VS1 | Very Good
From $873
Compare at $3,162
Save 21.5%IGI | 3.49ct | Radiant | D | VVS2 | Excellent
From $875
Compare at $1,114
Save 47.4%IGI | 3.41ct | Radiant | G | VVS2 | Excellent
From $875
Compare at $1,663
Save 74.7%IGI | 3.43ct | Radiant | F | VS2 | Ideal
From $932
Compare at $3,680
Save 70.5%IGI | 3.4ct | Radiant | FANCY | VS2 | Excellent
From $934
Compare at $3,162
Save 50.7%IGI | 3.41ct | Radiant | F | VVS2 | Very Good
From $944
Compare at $1,914
Save 50.1%IGI | 3.49ct | Radiant | F | VS1 | Very Good
From $946
Compare at $1,897
Save 76%IGI | 3.41ct | Radiant | E | VS2 | Ideal
From $954
Compare at $3,970
Save 54.2%IGI | 3.42ct | Radiant | E | VVS2 | Very Good
From $969
Compare at $2,116
Save 72.3%IGI | 3.46ct | Radiant | F | VVS2 | Ideal
From $977
Compare at $3,525
IGI | 3.48ct | Radiant | E | VS1 | Very Good
From $992
Compare at $1,978
Save 72.4%IGI | 3.42ct | Radiant | FANCY | VS1 | Excellent
From $993
Compare at $3,595
Entry pricing in this category starts around $536.
What to Know When Shopping for 3.4 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $26,605 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 $2,764 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 140 comparable stones in this segment. Prices start around $536 and go up to $27,141.
Based on the latest market data, the average asking price is about $3,805 with a median around $2,764.
The observed spread is roughly $26,605 across tracked listings, which is about 98.0% 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 $3,805. The median price is $2,764, 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 $26,605 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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