4.3 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 4.3 carat radiant lab grown diamonds usually range from $937 to $33,260, with an average price of $5,053.In the last month, prices for these diamonds are down 3.9%.Compare 166 verified listings across 9 retailers tracked by CaratRadar.
4.3 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 166 verified 4.3-carat radiant lab grown diamonds listed across 9 online retailers. Prices in this segment range from $937 to $33,260, with an average asking price of $5,053 and a median of $3,922.
The price spread of $32,323 (97.2% 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.
166 diamonds tracked in this segment
Price range: $937 to $33,260
Average price: $5,053
Median price: $3,922
Available across 9 retailers
Savings potential: up to 97.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
166
$937
$5,053
$3,922
$33,260
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 84.4%4.25ct | Radiant | F | VS1 | Ideal
From $1,316
Compare at $8,410
IGISave 76.6%4.25ct | Radiant | G | VS1 | Excellent
From $1,043
Compare at $4,450
IGISave 81.9%4.25ct | Radiant | E | SI1 | Very Good
From $1,253
Compare at $6,920
IGISave 77.6%4.25ct | Radiant | D | IF | Ideal
From $8,388
Compare at $37,480
IGISave 82.9%4.25ct | Radiant | D | VVS1 | Ideal
From $4,789
Compare at $27,930
IGISave 57.3%4.25ct | Radiant | G | VS1 | Very Good
From $1,458
Compare at $3,413
IGISave 70.5%4.25ct | Radiant | D | VVS1 | Ideal
From $4,061
Compare at $13,750
GIASave 28.1%4.25ct | Radiant | D | FL | Ideal
From $33,260
Compare at $46,233
GIASave 45.1%4.25ct | Radiant | D | VVS1 | Excellent
From $4,930
Compare at $8,975
IGISave 86.2%4.25ct | Radiant | E | VS1 | Ideal
From $1,393
Compare at $10,060
IGISave 58.1%4.25ct | Radiant | E | VS1 | Very Good
From $1,491
Compare at $3,558
IGISave 75.1%4.25ct | Radiant | F | VVS2 | Very Good
From $1,079
Compare at $4,335
IGISave 84.9%4.25ct | Radiant | D | VVS2 | Very Good
From $1,837
Compare at $12,150
IGISave 67.5%4.25ct | Radiant | D | VVS1 | Ideal
From $6,168
Compare at $18,961
GCALSave 66.5%4.25ct | Radiant | D | VVS2 | Ideal
From $6,133
Compare at $18,280
GIASave 82.9%4.25ct | Radiant | D | VVS1 | Excellent
From $5,001
Compare at $29,220
GIASave 68.6%4.25ct | Radiant | D | VVS1 | Excellent
From $6,130
Compare at $19,544
GIASave 34.4%4.25ct | Radiant | D | VVS1 | Excellent
From $8,975
Compare at $13,690
GIASave 40.4%4.25ct | Radiant | F | VVS1 | Ideal
From $10,290
Compare at $17,260
GIASave 68.6%4.25ct | Radiant | D | VVS1 | Excellent
From $6,130
Compare at $19,544
IGISave 83.6%4.25ct | Radiant | E | VVS1 | Very Good
From $3,929
Compare at $23,960
GIASave 60.7%4.26ct | Radiant | E | VVS1 | Ideal
From $3,912
Compare at $9,950
IGISave 74.6%4.26ct | Radiant | F | VS1 | Ideal
From $2,615
Compare at $10,310
IGISave 65.6%4.26ct | Radiant | D | VVS1 | Ideal
From $3,291
Compare at $9,572
IGISave 78.7%4.26ct | Radiant | F | VS1 | Ideal
From $1,570
Compare at $7,380
IGISave 63.8%4.26ct | Radiant | D | IF | Ideal
From $8,024
Compare at $22,180
GIASave 68.6%4.26ct | Radiant | D | VVS1 | Excellent
From $6,144
Compare at $19,589
GIASave 68.6%4.26ct | Radiant | D | VVS1 | Excellent
From $6,144
Compare at $19,589
GIASave 73%4.26ct | Radiant | E | IF | Excellent
From $15,932
Compare at $59,050
GIASave 68.6%4.26ct | Radiant | D | VVS1 | Excellent
From $6,144
Compare at $19,589
IGISave 83%4.26ct | Radiant | D | IF | Ideal
From $6,207
Compare at $36,570
IGISave 71.3%4.26ct | Radiant | D | IF | Excellent
From $10,182
Compare at $35,525
IGISave 75.8%4.26ct | Radiant | D | VVS1 | Very Good
From $6,153
Compare at $25,420
IGISave 85.5%4.26ct | Radiant | F | VVS2 | Ideal
From $1,300
Compare at $8,990
IGISave 84.7%4.26ct | Radiant | E | VS2 | Ideal
From $1,231
Compare at $8,040
IGISave 44.1%4.26ct | Radiant | D | VVS2 | Excellent
From $2,109
Compare at $3,772
IGISave 83%4.26ct | Radiant | D | IF | Ideal
From $6,207
Compare at $36,570
IGISave 61.3%4.26ct | Radiant | FANCY | VS1 | Excellent
From $3,663
Compare at $9,473
IGISave 83%4.26ct | Radiant | D | IF | Ideal
From $6,207
Compare at $36,570
IGISave 56%4.26ct | Radiant | E | VS1 | Very Good
From $1,494
Compare at $3,394
GIASave 68.6%4.26ct | Radiant | D | VVS1 | Excellent
From $6,144
Compare at $19,589
IGISave 76.8%4.26ct | Radiant | H | VVS2 | Excellent
From $1,548
Compare at $6,660
GIASave 65.2%4.27ct | Radiant | E | VVS2 | Ideal
From $3,630
Compare at $10,440
IGISave 89.1%4.27ct | Radiant | D | VS2 | Ideal
From $967
Compare at $8,850
GIASave 68.6%4.27ct | Radiant | D | VVS1 | Excellent
From $6,157
Compare at $19,635
IGISave 82.4%4.27ct | Radiant | D | IF | Ideal
From $6,446
Compare at $36,660
IGISave 84.6%4.27ct | Radiant | G | VS1 | Ideal
From $1,281
Compare at $8,310
IGISave 66.5%4.27ct | Radiant | E | VVS1 | Excellent
From $4,676
Compare at $13,964
IGISave 58%4.27ct | Radiant | F | VS1 | Very Good
From $1,612
Compare at $3,840
GIASave 58%4.27ct | Radiant | E | VVS2 | Excellent
From $3,022
Compare at $7,190
Entry pricing in this category starts around $937.
What to Know When Shopping for 4.3 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $32,323 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 $3,922 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 166 comparable stones in this segment. Prices start around $937 and go up to $33,260.
Based on the latest market data, the average asking price is about $5,053 with a median around $3,922.
The observed spread is roughly $32,323 across tracked listings, which is about 97.2% 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 $3,922, 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 $32,323 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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