4.8 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 4.8 carat radiant lab grown diamonds usually range from $695 to $22,824, with an average price of $3,741.In the last month, prices for these diamonds are down 3.2%.Compare 94 verified listings across 8 retailers tracked by CaratRadar.
4.8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 94 verified 4.8-carat radiant lab grown diamonds listed across 8 online retailers. Prices in this segment range from $695 to $22,824, with an average asking price of $3,741 and a median of $2,732.
The price spread of $22,128 (97.0% 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.
94 diamonds tracked in this segment
Price range: $695 to $22,824
Average price: $3,741
Median price: $2,732
Available across 8 retailers
Savings potential: up to 97.0%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
94
$695
$3,741
$2,732
$22,824
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 67.2%IGI | 4.8ct | Radiant | F | VS1 | Very Good
From $878
Compare at $2,674
IGI | 4.82ct | Radiant | F | VS1 | Very Good
From $881
Compare at $2,700
Save 67.6%IGI | 4.9ct | Radiant | F | VVS2 | Excellent
From $898
Compare at $2,771
Save 69.5%IGI | 4.85ct | Radiant | E | VS1 | Very Good
From $900
Compare at $2,949
Save 77.1%IGI | 4.89ct | Radiant | E | VS1 | Very Good
From $905
Compare at $3,960
Save 75.9%IGI | 4.84ct | Radiant | E | VS1 | Excellent
From $908
Compare at $3,775
Save 77%IGI | 4.9ct | Radiant | E | VS1 | Very Good
From $910
Compare at $3,965
Save 77%IGI | 4.9ct | Radiant | E | VS1 | Very Good
From $910
Compare at $3,965
Save 21.4%IGI | 4.89ct | Radiant | E | VS1 | Very Good
From $917
Compare at $1,167
Save 76.8%IGI | 4.89ct | Radiant | E | VS1 | Ideal
From $917
Compare at $3,960
IGI | 4.9ct | Radiant | E | VS1 | Very Good
From $919
Compare at $3,820
IGI | 4.87ct | Radiant | E | VS1 | Very Good
From $921
Compare at $2,968
Save 62.4%IGI | 4.84ct | Radiant | G | VS1 | Ideal
From $926
Compare at $2,465
Save 76.6%IGI | 4.89ct | Radiant | E | VS1 | Ideal
From $928
Compare at $3,960
Save 67.7%IGI | 4.83ct | Radiant | E | VS1 | Excellent
From $946
Compare at $2,928
Save 68.1%IGI | 4.9ct | Radiant | E | VS1 | Excellent
From $959
Compare at $3,010
Save 66.6%IGI | 4.83ct | Radiant | E | VVS2 | Very Good
From $985
Compare at $2,946
Save 66.9%IGI | 4.86ct | Radiant | E | VVS2 | Very Good
From $985
Compare at $2,978
Save 67.1%IGI | 4.87ct | Radiant | E | VVS2 | Very Good
From $985
Compare at $2,990
Save 67.2%IGI | 4.89ct | Radiant | E | VVS2 | Ideal
From $990
Compare at $3,014
Save 67.2%IGI | 4.89ct | Radiant | E | VVS2 | Very Good
From $990
Compare at $3,014
IGI | 4.81ct | Radiant | E | VVS2 | Very Good
From $994
Compare at $999
IGI | 4.81ct | Radiant | E | VVS2 | Very Good
From $994
Compare at $999
Save 66.9%IGI | 4.9ct | Radiant | E | VVS2 | Very Good
From $1,001
Compare at $3,025
IGI | 4.85ct | Radiant | E | VVS2 | Very Good
From $1,001
Compare at $2,969
Save 66.3%IGI | 4.86ct | Radiant | E | VVS2 | Excellent
From $1,004
Compare at $2,981
Save 65.7%IGI | 4.82ct | Radiant | E | VVS2 | Excellent
From $1,006
Compare at $2,937
Save 66.5%IGI | 4.89ct | Radiant | E | VVS2 | Ideal
From $1,010
Compare at $3,016
Save 66.5%IGI | 4.89ct | Radiant | E | VVS2 | Excellent
From $1,010
Compare at $3,016
Save 66.6%IGI | 4.9ct | Radiant | E | VVS2 | Excellent
From $1,012
Compare at $3,028
Save 66.1%IGI | 4.88ct | Radiant | E | VVS2 | Excellent
From $1,018
Compare at $3,007
Save 66.2%IGI | 4.9ct | Radiant | E | VVS2 | Excellent
From $1,023
Compare at $3,031
Save 76.6%IGI | 4.82ct | Radiant | G | VS1 | Excellent
From $1,124
Compare at $4,800
Save 61.8%IGI | 4.83ct | Radiant | E | VS1 | Very Good
From $1,140
Compare at $2,985
Save 72.6%IGI | 4.89ct | Radiant | E | VS1 | Excellent
From $1,170
Compare at $4,272
Save 52.3%IGI | 4.9ct | Radiant | G | VS1 | Excellent
From $1,191
Compare at $2,496
Save 51.6%IGI | 4.89ct | Radiant | G | VS1 | Excellent
From $1,204
Compare at $2,489
Save 77.6%IGI | 4.9ct | Radiant | G | VVS2 | Very Good
From $1,239
Compare at $5,530
Save 58.8%IGI | 4.88ct | Radiant | G | VVS2 | Excellent
From $1,249
Compare at $3,035
Save 54.1%IGI | 4.88ct | Radiant | F | VS1 | Excellent
From $1,269
Compare at $2,766
Save 51.9%IGI | 4.9ct | Radiant | F | VVS2 | Excellent
From $1,334
Compare at $2,771
Save 65.7%IGI | 4.86ct | Radiant | D | VVS2 | Excellent
From $1,348
Compare at $3,933
Save 53.6%IGI | 4.89ct | Radiant | FANCY | VS1 | Ideal
From $1,417
Compare at $3,057
Save 37.1%IGI | 4.83ct | Radiant | E | VVS2 | Very Good
From $1,516
Compare at $2,410
Save 37.9%IGI | 4.9ct | Radiant | E | VVS2 | Ideal
From $1,538
Compare at $2,477
Save 43.7%IGI | 4.86ct | Radiant | F | VVS2 | Very Good
From $1,563
Compare at $2,776
Save 33.3%IGI | 4.86ct | Radiant | E | VVS2 | Ideal
From $1,625
Compare at $2,438
Save 73.1%IGI | 4.83ct | Radiant | F | VS2 | Very Good
From $1,663
Compare at $6,190
Save 57.8%IGI | 4.8ct | Radiant | D | VVS2 | Excellent
From $1,675
Compare at $3,968
Save 57.7%IGI | 4.81ct | Radiant | D | VVS2 | Excellent
From $1,688
Compare at $3,986
Entry pricing in this category starts around $695.
What to Know When Shopping for 4.8 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $22,128 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 $2,732 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 94 comparable stones in this segment. Prices start around $695 and go up to $22,824.
Based on the latest market data, the average asking price is about $3,741 with a median around $2,732.
The observed spread is roughly $22,128 across tracked listings, which is about 97.0% 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 $3,741. The median price is $2,732, 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 $22,128 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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