4.3 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 4.3 carat radiant lab grown diamonds usually range from $696 to $41,868, with an average price of $4,832.In the last month, prices for these diamonds are down 9.5%.Compare 136 verified listings across 6 retailers tracked by CaratRadar.
4.3 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 136 verified 4.3-carat radiant lab grown diamonds listed across 6 online retailers. Prices in this segment range from $696 to $41,868, with an average asking price of $4,832 and a median of $3,205.
The price spread of $41,172 (98.3% 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.
136 diamonds tracked in this segment
Price range: $696 to $41,868
Average price: $4,832
Median price: $3,205
Available across 6 retailers
Savings potential: up to 98.3%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
136
$696
$4,832
$3,205
$41,868
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 63.9%IGI | 4.31ct | Radiant | E | VS2 | Very Good
From $783
Compare at $2,168
Save 65.2%IGI | 4.31ct | Radiant | F | VS2 | Very Good
From $785
Compare at $2,257
Save 67.7%IGI | 4.32ct | Radiant | E | VS1 | Excellent
From $785
Compare at $2,434
Save 64.9%IGI | 4.39ct | Radiant | E | VS2 | Very Good
From $787
Compare at $2,243
Save 64.2%IGI | 4.37ct | Radiant | G | VS1 | Excellent
From $797
Compare at $2,227
IGI | 4.32ct | Radiant | E | VS1 | Very Good
From $811
Compare at $3,495
IGI | 4.4ct | Radiant | E | VS1 | Very Good
From $820
Compare at $825
IGI | 4.31ct | Radiant | E | VS1 | Very Good
From $830
Compare at $2,432
Save 42%IGI | 4.39ct | Radiant | F | VS2 | Very Good
From $833
Compare at $1,437
Save 74.6%IGI | 4.35ct | Radiant | E | VS1 | Very Good
From $834
Compare at $3,282
IGI | 4.33ct | Radiant | E | VS1 | Very Good
From $842
Compare at $2,456
IGI | 4.36ct | Radiant | E | VVS2 | Very Good
From $902
Compare at $905
Save 62.3%IGI | 4.35ct | Radiant | F | VVS2 | Very Good
From $903
Compare at $2,395
IGI | 4.37ct | Radiant | E | VVS2 | Very Good
From $904
Compare at $907
IGI | 4.39ct | Radiant | E | VVS2 | Very Good
From $908
Compare at $911
IGI | 4.35ct | Radiant | E | VVS2 | Very Good
From $909
Compare at $913
Save 63.1%IGI | 4.31ct | Radiant | E | VS1 | Excellent
From $923
Compare at $2,498
Save 76%IGI | 4.3ct | Radiant | G | VS2 | Excellent
From $941
Compare at $3,920
Save 58.1%IGI | 4.33ct | Radiant | G | VVS2 | Very Good
From $975
Compare at $2,325
Save 60.9%IGI | 4.3ct | Radiant | E | VVS2 | Very Good
From $1,013
Compare at $2,593
Save 58.2%IGI | 4.3ct | Radiant | E | VS1 | Very Good
From $1,035
Compare at $2,476
Save 59.9%IGI | 4.33ct | Radiant | E | VVS2 | Very Good
From $1,059
Compare at $2,644
Save 72.4%IGI | 4.36ct | Radiant | FANCY | VVS2 | Very Good
From $1,071
Compare at $3,878
Save 57.7%IGI | 4.35ct | Radiant | E | VS1 | Ideal
From $1,071
Compare at $2,530
Save 71.9%IGI | 4.3ct | Radiant | FANCY | VVS2 | Very Good
From $1,104
Compare at $3,927
Save 66.3%IGI | 4.31ct | Radiant | D | VVS2 | Very Good
From $1,117
Compare at $3,313
Save 32.1%IGI | 4.36ct | Radiant | E | VVS2 | Ideal
From $1,121
Compare at $1,652
Save 74.6%IGI | 4.38ct | Radiant | G | VVS2 | Excellent
From $1,134
Compare at $4,470
Save 57.3%IGI | 4.39ct | Radiant | E | VVS2 | Very Good
From $1,170
Compare at $2,743
Save 72.9%IGI | 4.35ct | Radiant | E | VVS2 | Excellent
From $1,170
Compare at $4,318
Save 64.3%IGI | 4.3ct | Radiant | D | VVS2 | Very Good
From $1,179
Compare at $3,298
IGI | 4.4ct | Radiant | FANCY | VS2 | Ideal
From $1,275
Compare at $2,751
Save 32%IGI | 4.33ct | Radiant | G | VVS2 | Ideal
From $1,342
Compare at $1,973
Save 47.1%IGI | 4.4ct | Radiant | E | VS1 | Excellent
From $1,410
Compare at $2,664
Save 79.4%IGI | 4.31ct | Radiant | E | VVS1 | Excellent
From $1,433
Compare at $6,968
Save 39.8%IGI | 4.31ct | Radiant | F | VVS2 | Very Good
From $1,439
Compare at $2,389
Save 46.5%IGI | 4.3ct | Radiant | E | VVS2 | Excellent
From $1,462
Compare at $2,735
Save 79.4%IGI | 4.4ct | Radiant | E | VVS1 | Excellent
From $1,463
Compare at $7,113
Save 47.3%IGI | 4.37ct | Radiant | E | VVS2 | Excellent
From $1,485
Compare at $2,819
Save 32.7%IGI | 4.32ct | Radiant | F | VS1 | Very Good
From $1,561
Compare at $2,318
Save 55.7%IGI | 4.39ct | Radiant | D | VVS2 | Very Good
From $1,578
Compare at $3,561
Save 64.5%IGI | 4.4ct | Radiant | FANCY | VVS2 | Very Good
From $1,593
Compare at $4,483
Save 63.1%IGI | 4.4ct | Radiant | F | VS2 | Ideal
From $1,621
Compare at $4,390
Save 73.1%IGI | 4.39ct | Radiant | F | VS1 | Very Good
From $1,633
Compare at $6,070
Save 75.6%IGI | 4.39ct | Radiant | FANCY | VS1 | Excellent
From $1,656
Compare at $6,780
Save 45.4%IGI | 4.35ct | Radiant | E | VVS2 | Ideal
From $1,677
Compare at $3,072
Save 31.4%IGI | 4.33ct | Radiant | F | VVS2 | Very Good
From $1,686
Compare at $2,459
Save 78.2%IGI | 4.3ct | Radiant | F | VS1 | Very Good
From $1,793
Compare at $8,210
Save 72.9%IGI | 4.31ct | Radiant | FANCY | VVS2 | Very Good
From $1,797
Compare at $6,622
Save 78.1%IGI | 4.31ct | Radiant | F | VS1 | Very Good
From $1,800
Compare at $8,230
Entry pricing in this category starts around $696.
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 $41,172 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 $3,205 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 136 comparable stones in this segment. Prices start around $696 and go up to $41,868.
Based on the latest market data, the average asking price is about $4,832 with a median around $3,205.
The observed spread is roughly $41,172 across tracked listings, which is about 98.3% 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 $4,832. The median price is $3,205, 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 6 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 $41,172 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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