8 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 8 carat radiant lab grown diamonds usually range from $570 to $28,670, with an average price of $5,823.In the last month, prices for these diamonds are down 4.7%.Compare 92 verified listings across 5 retailers tracked by CaratRadar.
8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 92 verified 8-carat radiant lab grown diamonds listed across 5 online retailers. Prices in this segment range from $570 to $28,670, with an average asking price of $5,823 and a median of $4,193.
The price spread of $28,100 (98.0% 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.
92 diamonds tracked in this segment
Price range: $570 to $28,670
Average price: $5,823
Median price: $4,193
Available across 5 retailers
Savings potential: up to 98.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
92
$570
$5,823
$4,193
$28,670
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 73.4%IGI | 8.02ct | Radiant | G | VS2 | Excellent
From $1,289
Compare at $4,853
Save 77.3%IGI | 8.04ct | Radiant | G | VVS2 | Excellent
From $1,340
Compare at $5,912
Save 73.5%IGI | 8.03ct | Radiant | F | VVS2 | Excellent
From $1,411
Compare at $5,320
Save 73.6%IGI | 8.05ct | Radiant | F | VVS2 | Excellent
From $1,414
Compare at $5,346
Save 76.3%IGI | 8.08ct | Radiant | G | VVS2 | Excellent
From $1,417
Compare at $5,970
Save 73.6%IGI | 8.06ct | Radiant | F | VVS2 | Excellent
From $1,417
Compare at $5,359
Save 73.6%IGI | 8.08ct | Radiant | F | VVS2 | Excellent
From $1,420
Compare at $5,388
Save 73.7%IGI | 8.02ct | Radiant | F | VS1 | Ideal
From $1,431
Compare at $5,449
Save 73.8%IGI | 8.05ct | Radiant | F | VS1 | Ideal
From $1,436
Compare at $5,489
Save 73.4%IGI | 8.04ct | Radiant | F | VS1 | Excellent
From $1,442
Compare at $5,427
Save 71.1%IGI | 8.01ct | Radiant | F | VS1 | Ideal
From $1,567
Compare at $5,429
Save 71%IGI | 8.08ct | Radiant | F | VVS2 | Very Good
From $1,573
Compare at $5,416
Save 79.1%IGI | 8.02ct | Radiant | F | VS2 | Ideal
From $1,600
Compare at $7,642
Save 70.1%IGI | 8.06ct | Radiant | F | VVS2 | Ideal
From $1,612
Compare at $5,391
Save 75.6%IGI | 8.07ct | Radiant | F | VS1 | Very Good
From $1,613
Compare at $6,601
Save 79%IGI | 8.08ct | Radiant | F | VS2 | Ideal
From $1,646
Compare at $7,837
Save 48.4%IGI | 8.04ct | Radiant | F | VS2 | Very Good
From $1,676
Compare at $3,245
Save 69.9%IGI | 8.01ct | Radiant | E | VVS2 | Excellent
From $1,708
Compare at $5,670
Save 68.1%IGI | 8.02ct | Radiant | F | VVS2 | Very Good
From $1,710
Compare at $5,368
Save 69.7%IGI | 8.04ct | Radiant | E | VVS2 | Excellent
From $1,730
Compare at $5,715
Save 79.2%IGI | 8.08ct | Radiant | F | VVS2 | Very Good
From $1,789
Compare at $8,610
Save 66.7%IGI | 8.05ct | Radiant | E | VS1 | Very Good
From $1,808
Compare at $5,427
Save 66.9%IGI | 8.03ct | Radiant | F | VVS2 | Very Good
From $1,816
Compare at $5,481
Save 29.6%IGI | 8.02ct | Radiant | G | VS2 | Excellent
From $1,855
Compare at $2,635
Save 67.7%IGI | 8.02ct | Radiant | E | VVS2 | Very Good
From $1,856
Compare at $5,748
Save 67.8%IGI | 8.04ct | Radiant | E | VVS2 | Ideal
From $1,862
Compare at $5,775
Save 67.9%IGI | 8.07ct | Radiant | E | VVS2 | Very Good
From $1,865
Compare at $5,816
Save 41.9%IGI | 8.06ct | Radiant | E | VVS2 | Very Good
From $1,866
Compare at $3,209
Save 67.9%IGI | 8.07ct | Radiant | E | VVS2 | Very Good
From $1,868
Compare at $5,817
Save 64.1%IGI | 8.01ct | Radiant | G | VS1 | Very Good
From $1,884
Compare at $5,251
Save 19.5%IGI | 8.02ct | Radiant | G | VVS2 | Very Good
From $1,903
Compare at $2,365
Save 64.6%IGI | 8.02ct | Radiant | E | VS1 | Very Good
From $1,959
Compare at $5,534
Save 68.4%IGI | 8.09ct | Radiant | E | VVS2 | Excellent
From $1,977
Compare at $6,265
Save 64.4%IGI | 8.01ct | Radiant | E | VS1 | Excellent
From $1,978
Compare at $5,558
Save 58.9%IGI | 8ct | Radiant | G | VS2 | Very Good
From $1,995
Compare at $4,852
Save 65.1%IGI | 8.06ct | Radiant | F | VS1 | Ideal
From $2,009
Compare at $5,756
Save 62.7%IGI | 8.01ct | Radiant | E | VS1 | Excellent
From $2,032
Compare at $5,452
Save 72.8%IGI | 8ct | Radiant | F | VS2 | Ideal
From $2,056
Compare at $7,567
Save 63.1%IGI | 8.02ct | Radiant | F | VVS2 | Excellent
From $2,068
Compare at $5,603
Save 62%IGI | 8.09ct | Radiant | F | VS1 | Excellent
From $2,121
Compare at $5,580
Save 63.3%IGI | 8.02ct | Radiant | E | VVS2 | Excellent
From $2,138
Compare at $5,824
Save 63.2%IGI | 8.02ct | Radiant | E | VVS2 | Ideal
From $2,152
Compare at $5,851
Save 60%IGI | 8.07ct | Radiant | F | VVS2 | Very Good
From $2,161
Compare at $5,403
Save 60%IGI | 8.07ct | Radiant | F | VVS2 | Very Good
From $2,161
Compare at $5,403
Save 60.1%IGI | 8.08ct | Radiant | F | VVS2 | Very Good
From $2,163
Compare at $5,416
Save 62.9%IGI | 8.03ct | Radiant | E | VVS2 | Very Good
From $2,173
Compare at $5,864
Save 57.5%IGI | 8.03ct | Radiant | G | VS1 | Very Good
From $2,193
Compare at $5,161
Save 20.2%IGI | 8.01ct | Radiant | G | VS1 | Ideal
From $2,216
Compare at $2,778
Save 48.6%IGI | 8.05ct | Radiant | F | VS1 | Very Good
From $2,258
Compare at $4,393
Save 20.2%IGI | 8.05ct | Radiant | F | VS1 | Ideal
From $2,265
Compare at $2,839
Entry pricing in this category starts around $570.
What to Know When Shopping for 8 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $28,100 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 $4,193 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 92 comparable stones in this segment. Prices start around $570 and go up to $28,670.
Based on the latest market data, the average asking price is about $5,823 with a median around $4,193.
The observed spread is roughly $28,100 across tracked listings, which is about 98.0% 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 $5,823. The median price is $4,193, 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 5 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 $28,100 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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