8 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 8 carat radiant lab grown diamonds usually range from $570 to $30,953, with an average price of $6,089.In the last month, prices for these diamonds are up 0.4%.Compare 189 verified listings across 8 retailers tracked by CaratRadar.
8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 189 verified 8-carat radiant lab grown diamonds listed across 8 online retailers. Prices in this segment range from $570 to $30,953, with an average asking price of $6,089 and a median of $4,362.
The price spread of $30,383 (98.2% 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.
189 diamonds tracked in this segment
Price range: $570 to $30,953
Average price: $6,089
Median price: $4,362
Available across 8 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Apr 15, 2026Real market range for this carat, shape, and diamond type.
189
$570
$6,089
$4,362
$30,953
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 39.2%GIA | 8ct | Radiant | F | VS2 | Very Good
From $9,580
Compare at $15,760
Save 83.1%IGI | 8ct | Radiant | G | VS2 | Ideal
From $2,214
Compare at $13,070
Save 41.4%IGI | 8ct | Radiant | G | VS2 | Very Good
From $2,241
Compare at $3,821
Save 84.1%IGI | 8ct | Radiant | F | VVS2 | Ideal
From $2,853
Compare at $17,940
Save 59.5%IGI | 8ct | Radiant | FANCY | VVS2 | Excellent
From $8,500
Compare at $20,967
Save 40.8%IGI | 8ct | Radiant | E | VVS2 | Ideal
From $11,730
Compare at $19,830
Save 64.8%IGI | 8ct | Radiant | G | VS1 | Ideal
From $2,236
Compare at $6,354
Save 65.2%IGI | 8ct | Radiant | F | VS2 | Ideal
From $2,454
Compare at $7,052
Save 73%IGI | 8ct | Radiant | F | VS1 | Very Good
From $4,574
Compare at $16,970
Save 25.1%GIA | 8.01ct | Radiant | G | VS2 | Excellent
From $3,945
Compare at $5,266
Save 70%GIA | 8.01ct | Radiant | E | VS1 | Excellent
From $11,797
Compare at $39,360
Save 75.8%IGI | 8.01ct | Radiant | E | VS2 | Excellent
From $3,171
Compare at $13,080
Save 83.1%IGI | 8.01ct | Radiant | G | VS2 | Ideal
From $2,217
Compare at $13,100
Save 39.6%IGI | 8.01ct | Radiant | E | VS1 | Excellent
From $3,812
Compare at $6,311
Save 82.8%IGI | 8.01ct | Radiant | G | VS1 | Ideal
From $2,424
Compare at $14,120
Save 71.7%IGI | 8.01ct | Radiant | F | VS2 | Excellent
From $4,013
Compare at $14,170
Save 71.5%IGI | 8.01ct | Radiant | G | VS1 | Ideal
From $2,566
Compare at $8,990
Save 74.6%IGI | 8.01ct | Radiant | G | VS2 | Ideal
From $2,530
Compare at $9,960
Save 80.4%IGI | 8.01ct | Radiant | E | VVS2 | Ideal
From $3,377
Compare at $17,230
Save 85.5%IGI | 8.01ct | Radiant | G | VVS2 | Excellent
From $2,304
Compare at $15,940
Save 83.4%IGI | 8.01ct | Radiant | G | VS1 | Excellent
From $2,365
Compare at $14,230
Save 70.8%IGI | 8.01ct | Radiant | F | VS1 | Excellent
From $4,806
Compare at $16,480
Save 70.7%IGI | 8.01ct | Radiant | H | VVS2 | Ideal
From $2,426
Compare at $8,280
Save 86.6%IGI | 8.01ct | Radiant | G | VVS2 | Very Good
From $2,130
Compare at $15,910
Save 62.9%IGI | 8.01ct | Radiant | E | VS1 | Excellent
From $2,275
Compare at $6,138
Save 26.3%IGI | 8.01ct | Radiant | F | VS1 | Very Good
From $3,590
Compare at $4,869
Save 43.2%GIA | 8.02ct | Radiant | F | VS1 | Excellent
From $6,978
Compare at $12,287
Save 75.2%IGI | 8.02ct | Radiant | F | SI1 | Ideal
From $3,194
Compare at $12,870
Save 54.2%IGI | 8.02ct | Radiant | G | VS2 | Excellent
From $1,821
Compare at $3,972
Save 78.2%IGI | 8.02ct | Radiant | G | VS2 | Excellent
From $2,485
Compare at $11,390
Save 61.7%IGI | 8.02ct | Radiant | F | VS2 | Ideal
From $4,060
Compare at $10,590
Save 84%IGI | 8.02ct | Radiant | G | VVS2 | Ideal
From $2,540
Compare at $15,840
Save 47.4%IGI | 8.02ct | Radiant | F | VVS2 | Very Good
From $2,416
Compare at $4,593
Save 75.4%IGI | 8.02ct | Radiant | E | VVS2 | Excellent
From $3,694
Compare at $15,030
Save 75.3%IGI | 8.02ct | Radiant | D | VS1 | Ideal
From $5,578
Compare at $22,580
Save 30.4%IGI | 8.02ct | Radiant | F | VVS2 | Excellent
From $3,341
Compare at $4,799
Save 86.8%IGI | 8.02ct | Radiant | F | VS1 | Ideal
From $2,198
Compare at $16,620
Save 48.6%IGI | 8.02ct | Radiant | G | VS1 | Ideal
From $2,145
Compare at $4,175
Save 84.6%IGI | 8.02ct | Radiant | F | VS2 | Ideal
From $2,198
Compare at $14,260
Save 80.6%IGI | 8.02ct | Radiant | G | VS1 | Very Good
From $2,743
Compare at $14,140
Save 78.9%IGI | 8.02ct | Radiant | G | VS2 | Ideal
From $2,525
Compare at $11,940
Save 74.8%IGI | 8.02ct | Radiant | G | VS2 | Ideal
From $2,588
Compare at $10,290
Save 84.8%IGI | 8.02ct | Radiant | F | VS1 | Excellent
From $2,152
Compare at $14,155
Save 81.9%IGI | 8.02ct | Radiant | F | VVS2 | Excellent
From $3,227
Compare at $17,880
Save 81%IGI | 8.02ct | Radiant | E | VVS2 | Ideal
From $1,675
Compare at $8,800
Save 87.5%IGI | 8.02ct | Radiant | G | VVS2 | Ideal
From $1,990
Compare at $15,920
Save 81.4%IGI | 8.02ct | Radiant | E | VVS2 | Ideal
From $3,707
Compare at $19,880
Save 65.2%IGI | 8.02ct | Radiant | F | VS2 | Ideal
From $2,460
Compare at $7,070
Save 84.5%IGI | 8.02ct | Radiant | G | VS1 | Excellent
From $2,209
Compare at $14,240
Save 84.2%IGI | 8.02ct | Radiant | G | VS1 | Very Good
From $2,242
Compare at $14,230
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 $30,383 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 $4,362 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 189 comparable stones in this segment. Prices start around $570 and go up to $30,953.
Based on the latest market data, the average asking price is about $6,089 with a median around $4,362.
The observed spread is roughly $30,383 across tracked listings, which is about 98.2% 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 $4,362, 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 $30,383 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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