4.8 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 4.8 carat radiant lab grown diamonds usually range from $780 to $26,720, with an average price of $4,046.In the last month, prices for these diamonds are down 2.2%.Compare 241 verified listings across 8 retailers tracked by CaratRadar.
4.8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 241 verified 4.8-carat radiant lab grown diamonds listed across 8 online retailers. Prices in this segment range from $780 to $26,720, with an average asking price of $4,046 and a median of $2,975.
The price spread of $25,940 (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.
241 diamonds tracked in this segment
Price range: $780 to $26,720
Average price: $4,046
Median price: $2,975
Available across 8 retailers
Savings potential: up to 97.1%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
241
$780
$4,046
$2,975
$26,720
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 61.1%GIA | 4.8ct | Radiant | F | VVS2 | Excellent
From $4,240
Compare at $10,896
Save 72%GIA | 4.8ct | Radiant | D | FL | Excellent
From $33,370
Compare at $119,090
Save 76.1%IGI | 4.8ct | Radiant | G | VS1 | Excellent
From $1,811
Compare at $7,570
Save 57.8%IGI | 4.8ct | Radiant | FANCY | VS1 | Good
From $4,069
Compare at $9,645
Save 83.6%IGI | 4.8ct | Radiant | E | VVS2 | Ideal
From $1,907
Compare at $11,620
Save 81.6%IGI | 4.8ct | Radiant | D | VS2 | Ideal
From $1,873
Compare at $10,176
Save 76.1%IGI | 4.8ct | Radiant | F | VVS2 | Ideal
From $1,896
Compare at $7,920
Save 84.7%IGI | 4.8ct | Radiant | D | VS1 | Ideal
From $1,840
Compare at $12,000
Save 72.7%IGI | 4.8ct | Radiant | E | VVS2 | Very Good
From $3,164
Compare at $11,600
Save 67.3%IGI | 4.8ct | Radiant | F | VS2 | Very Good
From $1,788
Compare at $5,470
Save 76.3%IGI | 4.8ct | Radiant | F | VS1 | Very Good
From $1,511
Compare at $6,380
IGI | 4.8ct | Radiant | D | VVS2 | Ideal
From $8,019
Compare at $8,590
Save 79.2%IGI | 4.8ct | Radiant | E | VS1 | Very Good
From $1,802
Compare at $8,680
Save 46.8%IGI | 4.8ct | Radiant | D | VVS2 | Excellent
From $2,419
Compare at $4,549
Save 29.7%IGI | 4.8ct | Radiant | E | VS1 | Very Good
From $1,322
Compare at $1,881
Save 75.9%IGI | 4.8ct | Radiant | E | VVS2 | Very Good
From $1,784
Compare at $7,390
IGI | 4.8ct | Radiant | F | VS1 | Very Good
From $1,292
Compare at $2,439
Save 62.3%GIA | 4.81ct | Radiant | E | VVS2 | Ideal
From $7,167
Compare at $19,030
Save 62.3%GIA | 4.81ct | Radiant | E | VVS2 | Ideal
From $7,167
Compare at $19,030
GIA | 4.81ct | Radiant | E | VVS2 | Ideal
From $10,520
Compare at $10,990
Save 75.8%GIA | 4.81ct | Radiant | E | VVS2 | Excellent
From $6,388
Compare at $26,390
Save 47.8%IGI | 4.81ct | Radiant | H | VS2 | Ideal
From $1,018
Compare at $1,949
Save 72.4%IGI | 4.81ct | Radiant | E | VVS1 | Ideal
From $3,799
Compare at $13,750
Save 79.6%IGI | 4.81ct | Radiant | E | VS1 | Excellent
From $1,987
Compare at $9,720
Save 77.1%IGI | 4.81ct | Radiant | E | VVS2 | Very Good
From $2,306
Compare at $10,090
Save 76.3%IGI | 4.81ct | Radiant | F | VS1 | Very Good
From $2,176
Compare at $9,180
Save 77.2%IGI | 4.81ct | Radiant | E | VS1 | Very Good
From $2,202
Compare at $9,660
Save 62.4%IGI | 4.81ct | Radiant | D | VVS1 | Excellent
From $8,622
Compare at $22,921
Save 47.4%IGI | 4.81ct | Radiant | D | VVS2 | Excellent
From $2,398
Compare at $4,558
Save 78.9%IGI | 4.81ct | Radiant | H | VVS2 | Excellent
From $1,645
Compare at $7,780
Save 82.5%IGI | 4.81ct | Radiant | F | VVS2 | Excellent
From $1,819
Compare at $10,400
Save 86.8%IGI | 4.81ct | Radiant | G | VVS2 | Ideal
From $1,240
Compare at $9,400
Save 82.5%IGI | 4.81ct | Radiant | F | VVS2 | Excellent
From $1,819
Compare at $10,400
Save 77.1%IGI | 4.81ct | Radiant | F | VS1 | Very Good
From $1,280
Compare at $5,600
Save 30.6%IGI | 4.81ct | Radiant | E | VVS2 | Very Good
From $1,446
Compare at $2,084
Save 30.6%IGI | 4.81ct | Radiant | E | VVS2 | Very Good
From $1,460
Compare at $2,104
Save 66.9%GIA | 4.82ct | Radiant | D | VS1 | Excellent
From $4,607
Compare at $13,920
Save 69.5%GIA | 4.82ct | Radiant | F | VS1 | Excellent
From $2,862
Compare at $9,370
Save 69.4%GIA | 4.82ct | Radiant | E | VVS2 | Excellent
From $3,108
Compare at $10,160
Save 70%IGI | 4.82ct | Radiant | F | VS1 | Ideal
From $2,058
Compare at $6,850
Save 75.1%IGI | 4.82ct | Radiant | G | VS2 | Ideal
From $1,104
Compare at $4,430
Save 84.7%IGI | 4.82ct | Radiant | D | VS1 | Ideal
From $1,847
Compare at $12,050
Save 76.9%IGI | 4.82ct | Radiant | D | VS1 | Ideal
From $2,077
Compare at $9,000
Save 80.6%IGI | 4.82ct | Radiant | F | VVS1 | Ideal
From $2,338
Compare at $12,030
Save 77.3%IGI | 4.82ct | Radiant | F | VVS2 | Very Good
From $1,833
Compare at $8,070
Save 84.2%IGI | 4.82ct | Radiant | E | VS1 | Ideal
From $1,040
Compare at $6,600
Save 34.1%IGI | 4.82ct | Radiant | D | VVS2 | Very Good
From $1,887
Compare at $2,864
Save 80.9%IGI | 4.82ct | Radiant | F | VS1 | Very Good
From $1,298
Compare at $6,810
Save 72.4%IGI | 4.82ct | Radiant | E | VVS2 | Very Good
From $1,463
Compare at $5,300
Save 28.4%GIA | 4.83ct | Radiant | F | VVS2 | Ideal
From $10,450
Compare at $14,600
Entry pricing in this category starts around $780.
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 $25,940 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 $2,975 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 241 comparable stones in this segment. Prices start around $780 and go up to $26,720.
Based on the latest market data, the average asking price is about $4,046 with a median around $2,975.
The observed spread is roughly $25,940 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 our data, the median price is $2,975, 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 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 $25,940 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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