8.3 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 8.3 carat radiant lab grown diamonds usually range from $1,591 to $54,990, with an average price of $3,287.In the last month, prices for these diamonds are down 1.2%.Compare 81 verified listings across 7 retailers tracked by CaratRadar.
8.3 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 81 verified 8.3-carat radiant lab grown diamonds listed across 7 online retailers. Prices in this segment range from $1,591 to $54,990, with an average asking price of $3,287 and a median of $2,306.
The price spread of $53,399 (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.
81 diamonds tracked in this segment
Price range: $1,591 to $54,990
Average price: $3,287
Median price: $2,306
Available across 7 retailers
Savings potential: up to 97.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
81
$1,591
$3,287
$2,306
$54,990
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 79.6%8.25ct | Radiant | F | VVS2 | Ideal
From $1,775
Compare at $8,710
IGISave 71.9%8.25ct | Radiant | E | VVS2 | Ideal
From $2,753
Compare at $9,800
IGISave 79.5%8.25ct | Radiant | F | VS1 | Ideal
From $2,152
Compare at $10,520
IGISave 78.3%8.25ct | Radiant | F | VS1 | Ideal
From $2,328
Compare at $10,740
IGISave 82.2%8.25ct | Radiant | E | VVS2 | Very Good
From $2,394
Compare at $13,440
GIASave 18.3%8.26ct | Radiant | F | VS1 | Excellent
From $8,257
Compare at $10,103
IGISave 91%8.26ct | Radiant | F | VVS2 | Excellent
From $2,025
Compare at $22,480
IGISave 85.3%8.26ct | Radiant | E | VVS2 | Ideal
From $2,306
Compare at $15,700
IGISave 58.3%8.26ct | Radiant | H | SI1 | Ideal
From $1,717
Compare at $4,118
IGISave 91.1%8.26ct | Radiant | F | VVS2 | Excellent
From $1,995
Compare at $22,480
IGISave 71.7%8.26ct | Radiant | F | VVS2 | Excellent
From $2,287
Compare at $8,090
IGISave 72%8.26ct | Radiant | F | VVS2 | Excellent
From $2,265
Compare at $8,090
IGISave 15.6%8.26ct | Radiant | E | VVS2 | Ideal
From $2,100
Compare at $2,488
IGISave 82.3%8.26ct | Radiant | F | VS1 | Ideal
From $2,309
Compare at $13,030
IGISave 78%8.26ct | Radiant | F | VS1 | Ideal
From $2,331
Compare at $10,590
IGISave 71.3%8.26ct | Radiant | E | VVS2 | Ideal
From $3,057
Compare at $10,660
IGISave 73.7%8.26ct | Radiant | F | VS2 | Ideal
From $2,666
Compare at $10,150
IGISave 73.1%8.26ct | Radiant | F | VVS2 | Ideal
From $2,265
Compare at $8,425
IGISave 78%8.26ct | Radiant | F | VS1 | Excellent
From $2,331
Compare at $10,590
IGISave 81.6%8.27ct | Radiant | F | VS1 | Very Good
From $3,019
Compare at $16,430
IGISave 76.3%8.27ct | Radiant | F | VVS2 | Ideal
From $2,002
Compare at $8,435
IGISave 81.9%8.27ct | Radiant | E | VS1 | Ideal
From $2,444
Compare at $13,510
IGISave 76.3%8.27ct | Radiant | F | VVS2 | Ideal
From $2,002
Compare at $8,435
IGISave 90.1%8.27ct | Radiant | F | VS1 | Excellent
From $1,995
Compare at $20,250
IGISave 71.6%8.27ct | Radiant | F | VVS2 | Ideal
From $2,466
Compare at $8,680
IGISave 76.3%8.27ct | Radiant | F | VVS2 | Ideal
From $2,002
Compare at $8,435
IGISave 85.3%8.27ct | Radiant | E | VVS2 | Ideal
From $2,422
Compare at $16,460
IGISave 87%8.27ct | Radiant | F | VS1 | Ideal
From $2,224
Compare at $17,060
GIASave 82.8%8.28ct | Radiant | D | IF | Excellent
From $54,990
Compare at $320,570
IGISave 83.8%8.28ct | Radiant | H | VS1 | Ideal
From $1,598
Compare at $9,870
IGISave 71.5%8.28ct | Radiant | E | VVS2 | Ideal
From $2,763
Compare at $9,710
IGISave 76.3%8.28ct | Radiant | F | VVS2 | Ideal
From $2,005
Compare at $8,445
IGISave 82.8%8.28ct | Radiant | E | VS1 | Ideal
From $2,447
Compare at $14,260
IGISave 85.9%8.28ct | Radiant | E | VVS2 | Ideal
From $2,425
Compare at $17,240
IGISave 65.2%8.28ct | Radiant | F | VS2 | Ideal
From $2,187
Compare at $6,290
IGISave 81.8%8.28ct | Radiant | F | VS1 | Very Good
From $2,993
Compare at $16,450
IGISave 78%8.28ct | Radiant | F | VS1 | Ideal
From $2,359
Compare at $10,720
IGISave 76.3%8.29ct | Radiant | F | VVS2 | Ideal
From $2,007
Compare at $8,455
IGISave 60.2%8.29ct | Radiant | F | VS2 | Excellent
From $2,044
Compare at $5,136
IGISave 76.3%8.29ct | Radiant | F | VVS2 | Ideal
From $2,007
Compare at $8,455
IGISave 71.9%8.29ct | Radiant | E | VVS2 | Ideal
From $2,767
Compare at $9,840
IGISave 73.6%8.29ct | Radiant | E | VVS2 | Ideal
From $2,406
Compare at $9,115
IGISave 83.7%8.29ct | Radiant | E | VS1 | Ideal
From $2,450
Compare at $15,050
IGISave 78.3%8.29ct | Radiant | F | VS1 | Ideal
From $2,340
Compare at $10,790
GIASave 32.5%8.29ct | Radiant | F | SI1 | Ideal
From $9,113
Compare at $13,500
IGISave 79.4%8.29ct | Radiant | FANCY | VVS2 | Excellent
From $4,684
Compare at $22,715
IGISave 76.3%8.29ct | Radiant | F | VVS2 | Ideal
From $2,007
Compare at $8,455
IGISave 71.5%8.29ct | Radiant | E | VVS2 | Ideal
From $2,767
Compare at $9,720
IGISave 72%8.29ct | Radiant | F | VVS2 | Excellent
From $2,273
Compare at $8,120
IGISave 60.2%8.3ct | Radiant | G | VS2 | Excellent
From $4,897
Compare at $12,300
Entry pricing in this category starts around $1,591.
What to Know When Shopping for 8.3 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $53,399 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 $2,306 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 81 comparable stones in this segment. Prices start around $1,591 and go up to $54,990.
Based on the latest market data, the average asking price is about $3,287 with a median around $2,306.
The observed spread is roughly $53,399 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 $2,306, 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 7 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 $53,399 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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