4 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 4 carat radiant lab grown diamonds usually range from $547 to $18,664, with an average price of $3,001.In the last month, prices for these diamonds are up 1.8%.Compare 2,171 verified listings across 14 retailers tracked by CaratRadar.
4 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,171 verified 4-carat radiant lab grown diamonds listed across 14 online retailers. Prices in this segment range from $547 to $18,664, with an average asking price of $3,001 and a median of $2,122.
The price spread of $18,117 (97.1% 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.
2,171 diamonds tracked in this segment
Price range: $547 to $18,664
Average price: $3,001
Median price: $2,122
Available across 14 retailers
Savings potential: up to 97.1%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
2,171
$547
$3,001
$2,122
$18,664
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 23.4%IGI | 4.06ct | Radiant | H | VS1 | Ideal
From $562
Compare at $734
IGI | 4.09ct | Radiant | H | VS1 | Very Good
From $612
Compare at $1,626
Save 72.3%IGI | 4.03ct | Radiant | G | VS2 | Excellent
From $612
Compare at $2,208
Save 64.3%IGI | 4.02ct | Radiant | H | VVS2 | Very Good
From $629
Compare at $1,763
Save 62.8%IGI | 4.02ct | Radiant | G | VS1 | Very Good
From $689
Compare at $1,850
Save 65%IGI | 4.02ct | Radiant | G | VVS2 | Very Good
From $691
Compare at $1,973
Save 63.3%IGI | 4.08ct | Radiant | G | VS1 | Very Good
From $699
Compare at $1,903
Save 78.4%IGI | 4ct | Radiant | G | SI1 | Ideal
From $700
Compare at $3,240
Save 65.3%IGI | 4.07ct | Radiant | G | VVS2 | Very Good
From $700
Compare at $2,020
Save 79.8%IGI | 4.09ct | Radiant | G | SI1 | Ideal
From $715
Compare at $3,540
Save 61.1%IGI | 4.01ct | Radiant | G | VS1 | Very Good
From $722
Compare at $1,857
Save 61.3%IGI | 4ct | Radiant | E | VS2 | Very Good
From $729
Compare at $1,883
Save 61.2%IGI | 4ct | Radiant | E | VS2 | Very Good
From $730
Compare at $1,883
Save 61.2%IGI | 4ct | Radiant | E | VS2 | Very Good
From $730
Compare at $1,883
Save 61.2%IGI | 4ct | Radiant | E | VS2 | Very Good
From $730
Compare at $1,883
Save 61.3%IGI | 4.01ct | Radiant | E | VS2 | Very Good
From $732
Compare at $1,891
Save 61.3%IGI | 4.01ct | Radiant | E | VS2 | Very Good
From $732
Compare at $1,891
Save 61.3%IGI | 4.01ct | Radiant | E | VS2 | Very Good
From $732
Compare at $1,891
Save 59.8%IGI | 4.02ct | Radiant | G | VS2 | Very Good
From $734
Compare at $1,828
Save 77.9%IGI | 4.06ct | Radiant | H | VS1 | Ideal
From $734
Compare at $3,320
Save 62.6%IGI | 4.02ct | Radiant | F | VS2 | Very Good
From $734
Compare at $1,962
Save 61.6%IGI | 4.04ct | Radiant | E | VS2 | Very Good
From $737
Compare at $1,919
Save 61.2%IGI | 4ct | Radiant | E | VS2 | Very Good
From $739
Compare at $1,905
Save 60.8%IGI | 4ct | Radiant | E | VS2 | Very Good
From $739
Compare at $1,885
Save 60.8%IGI | 4ct | Radiant | E | VS2 | Very Good
From $739
Compare at $1,885
Save 61.7%IGI | 4.05ct | Radiant | E | VS2 | Very Good
From $739
Compare at $1,927
Save 60.9%IGI | 4.01ct | Radiant | E | VS2 | Excellent
From $740
Compare at $1,894
Save 62.6%IGI | 4.03ct | Radiant | G | VVS2 | Ideal
From $740
Compare at $1,978
Save 60.9%IGI | 4.01ct | Radiant | E | VS2 | Very Good
From $740
Compare at $1,894
Save 60.9%IGI | 4.01ct | Radiant | E | VS2 | Very Good
From $740
Compare at $1,894
Save 63%IGI | 4.07ct | Radiant | F | VS2 | Very Good
From $742
Compare at $2,008
Save 63.4%IGI | 4.07ct | Radiant | G | VVS2 | Very Good
From $742
Compare at $2,026
Save 75.3%IGI | 4.05ct | Radiant | H | VS2 | Very Good
From $743
Compare at $3,010
Save 62.4%IGI | 4.09ct | Radiant | F | VS1 | Very Good
From $745
Compare at $1,980
Save 62.1%IGI | 4.09ct | Radiant | E | VS2 | Very Good
From $745
Compare at $1,964
Save 63.1%IGI | 4ct | Radiant | F | VVS2 | Very Good
From $747
Compare at $2,025
Save 60.7%IGI | 4ct | Radiant | F | VS1 | Excellent
From $747
Compare at $1,903
Save 64.4%IGI | 4.06ct | Radiant | E | SI1 | Very Good
From $749
Compare at $2,104
Save 78.8%IGI | 4.02ct | Radiant | H | VS1 | Excellent
From $750
Compare at $3,530
Save 62.6%IGI | 4.07ct | Radiant | F | VS2 | Very Good
From $751
Compare at $2,010
Save 61.4%IGI | 4.07ct | Radiant | E | VS2 | Ideal
From $751
Compare at $1,948
Save 61%IGI | 4.03ct | Radiant | F | VS1 | Very Good
From $752
Compare at $1,930
Save 62%IGI | 4.04ct | Radiant | F | VS2 | Ideal
From $754
Compare at $1,984
Save 64.2%IGI | 4ct | Radiant | E | VS1 | Ideal
From $754
Compare at $2,107
Save 60.7%IGI | 4.02ct | Radiant | F | VS1 | Very Good
From $755
Compare at $1,921
Save 61.2%IGI | 4.05ct | Radiant | F | VS1 | Very Good
From $756
Compare at $1,948
Save 60.4%IGI | 4.01ct | Radiant | F | VS1 | Very Good
From $757
Compare at $1,914
Save 60.4%IGI | 4.01ct | Radiant | F | VS1 | Very Good
From $757
Compare at $1,914
Save 49.5%IGI | 4.05ct | Radiant | H | VVS2 | Ideal
From $758
Compare at $1,501
Save 61.4%IGI | 4.07ct | Radiant | F | VS1 | Very Good
From $759
Compare at $1,966
Entry pricing in this category starts around $547.
What to Know When Shopping for 4 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $18,117 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 $2,122 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 2,171 comparable stones in this segment. Prices start around $547 and go up to $18,664.
Based on the latest market data, the average asking price is about $3,001 with a median around $2,122.
The observed spread is roughly $18,117 across tracked listings, which is about 97.1% 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 $3,001. The median price is $2,122, 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 14 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 $18,117 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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