6.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 6.5 carat radiant lab grown diamonds usually range from $1,252 to $61,810, with an average price of $3,574.In the last month, prices for these diamonds are down 1.6%.Compare 60 verified listings across 6 retailers tracked by CaratRadar.
6.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 60 verified 6.5-carat radiant lab grown diamonds listed across 6 online retailers. Prices in this segment range from $1,252 to $61,810, with an average asking price of $3,574 and a median of $1,813.
The price spread of $60,558 (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.
60 diamonds tracked in this segment
Price range: $1,252 to $61,810
Average price: $3,574
Median price: $1,813
Available across 6 retailers
Savings potential: up to 98.0%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
60
$1,252
$3,574
$1,813
$61,810
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 86.7%6.46ct | Radiant | G | VS2 | Ideal
From $1,664
Compare at $12,520
IGISave 72.7%6.46ct | Radiant | F | VS1 | Ideal
From $1,394
Compare at $5,100
IGISave 42.1%6.47ct | Radiant | F | VS2 | Ideal
From $6,657
Compare at $11,500
IGISave 86.9%6.47ct | Radiant | E | VS2 | Very Good
From $1,680
Compare at $12,790
IGISave 83%6.48ct | Radiant | H | VS1 | Ideal
From $1,636
Compare at $9,620
GIASave 19.9%6.49ct | Radiant | G | VS2 | Ideal
From $11,050
Compare at $13,791
IGISave 61.5%6.49ct | Radiant | E | VVS1 | Ideal
From $7,023
Compare at $18,250
IGISave 61.3%6.5ct | Radiant | G | VS2 | Ideal
From $1,252
Compare at $3,233
GIASave 42%6.5ct | Radiant | D | FL | Ideal
From $61,810
Compare at $106,605
IGISave 20.2%6.5ct | Radiant | G | VVS2 | Very Good
From $1,397
Compare at $1,752
IGISave 88.2%6.5ct | Radiant | F | VS1 | Ideal
From $1,579
Compare at $13,370
IGISave 80.5%6.51ct | Radiant | G | VVS2 | Ideal
From $2,513
Compare at $12,860
IGISave 84.8%6.51ct | Radiant | F | VVS2 | Ideal
From $2,209
Compare at $14,510
IGISave 88.4%6.51ct | Radiant | F | VVS2 | Excellent
From $1,691
Compare at $14,590
IGISave 88.4%6.51ct | Radiant | F | VS1 | Excellent
From $1,555
Compare at $13,460
IGISave 88.7%6.51ct | Radiant | F | VVS2 | Ideal
From $1,649
Compare at $14,610
IGISave 57.1%6.51ct | Radiant | G | SI1 | Ideal
From $3,912
Compare at $9,110
IGISave 88.7%6.51ct | Radiant | G | VS1 | Ideal
From $1,561
Compare at $13,850
IGISave 84.8%6.51ct | Radiant | F | VS1 | Ideal
From $1,393
Compare at $9,160
IGISave 88.4%6.51ct | Radiant | F | VVS2 | Excellent
From $1,691
Compare at $14,590
IGISave 54%6.51ct | Radiant | FANCY | VS2 | Very Good
From $2,187
Compare at $4,754
IGISave 86.7%6.51ct | Radiant | G | VS2 | Ideal
From $1,677
Compare at $12,620
IGISave 84.8%6.51ct | Radiant | F | VS1 | Ideal
From $1,393
Compare at $9,160
IGISave 88.1%6.51ct | Radiant | F | VVS2 | Very Good
From $1,731
Compare at $14,600
IGISave 63.3%6.51ct | Radiant | I | VS1 | Ideal
From $1,728
Compare at $4,712
IGISave 78.4%6.51ct | Radiant | G | VS1 | Ideal
From $1,534
Compare at $7,110
IGISave 82.8%6.51ct | Radiant | F | VVS2 | Very Good
From $2,857
Compare at $16,600
IGISave 16.6%6.51ct | Radiant | E | VS1 | Very Good
From $1,859
Compare at $2,230
IGISave 82.5%6.52ct | Radiant | E | VVS2 | Ideal
From $2,835
Compare at $16,160
IGISave 89.5%6.52ct | Radiant | F | VVS2 | Very Good
From $1,894
Compare at $18,006
IGISave 66.9%6.52ct | Radiant | F | VS1 | Ideal
From $1,705
Compare at $5,150
IGISave 57.6%6.52ct | Radiant | H | VS2 | Excellent
From $3,521
Compare at $8,310
IGISave 88.9%6.52ct | Radiant | F | VVS2 | Excellent
From $1,812
Compare at $16,320
IGISave 72.9%6.52ct | Radiant | F | VS1 | Ideal
From $1,396
Compare at $5,150
IGISave 89%6.52ct | Radiant | E | VS1 | Ideal
From $2,248
Compare at $20,370
IGISave 88.2%6.52ct | Radiant | E | VS2 | Very Good
From $1,523
Compare at $12,960
IGISave 87.3%6.52ct | Radiant | E | VVS2 | Excellent
From $2,062
Compare at $16,270
IGISave 85.1%6.52ct | Radiant | F | VS1 | Very Good
From $2,005
Compare at $13,410
GIASave 72.5%6.53ct | Radiant | G | VS2 | Ideal
From $3,189
Compare at $11,600
IGISave 58.2%6.53ct | Radiant | F | VVS2 | Very Good
From $1,666
Compare at $3,983
IGISave 88.4%6.53ct | Radiant | E | VS1 | Excellent
From $1,894
Compare at $16,330
IGISave 85.8%6.53ct | Radiant | F | VS2 | Excellent
From $1,984
Compare at $13,950
IGISave 87%6.53ct | Radiant | F | VVS2 | Excellent
From $1,890
Compare at $14,550
IGISave 89.4%6.53ct | Radiant | E | VS1 | Ideal
From $1,732
Compare at $16,320
IGISave 84.5%6.53ct | Radiant | E | VVS2 | Very Good
From $2,519
Compare at $16,240
IGISave 72.2%6.53ct | Radiant | E | VS1 | Very Good
From $3,680
Compare at $13,250
IGISave 82.9%6.53ct | Radiant | E | VS1 | Excellent
From $2,101
Compare at $12,260
IGISave 90.3%6.53ct | Radiant | E | VS1 | Good
From $1,815
Compare at $18,700
IGISave 88.4%6.53ct | Radiant | G | VVS2 | Good
From $1,507
Compare at $12,970
IGISave 90.1%6.53ct | Radiant | F | VVS2 | Ideal
From $1,438
Compare at $14,550
Entry pricing in this category starts around $1,252.
What to Know When Shopping for 6.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $60,558 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 $1,813 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 60 comparable stones in this segment. Prices start around $1,252 and go up to $61,810.
Based on the latest market data, the average asking price is about $3,574 with a median around $1,813.
The observed spread is roughly $60,558 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 our data, the median price is $1,813, 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 6 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 $60,558 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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