6.8 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 6.8 carat radiant lab grown diamonds usually range from $740 to $39,722, with an average price of $5,924.In the last month, prices for these diamonds are down 1.3%.Compare 32 verified listings across 6 retailers tracked by CaratRadar.
6.8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 32 verified 6.8-carat radiant lab grown diamonds listed across 6 online retailers. Prices in this segment range from $740 to $39,722, with an average asking price of $5,924 and a median of $4,262.
The price spread of $38,982 (98.1% 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.
32 diamonds tracked in this segment
Price range: $740 to $39,722
Average price: $5,924
Median price: $4,262
Available across 6 retailers
Savings potential: up to 98.1%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
32
$740
$5,924
$4,262
$39,722
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 81.3%IGI | 6.8ct | Radiant | E | VS1 | Ideal
From $3,168
Compare at $16,900
Save 91.1%IGI | 6.8ct | Radiant | F | VVS2 | Very Good
From $1,350
Compare at $15,230
Save 74.1%IGI | 6.81ct | Radiant | G | VS1 | Ideal
From $1,939
Compare at $7,500
Save 81.9%IGI | 6.81ct | Radiant | E | VS1 | Excellent
From $3,061
Compare at $16,930
Save 72.1%IGI | 6.81ct | Radiant | G | VS1 | Very Good
From $1,939
Compare at $6,960
Save 88.6%IGI | 6.81ct | Radiant | G | VVS2 | Ideal
From $1,544
Compare at $13,510
IGI | 6.81ct | Radiant | F | VS2 | Very Good
From $1,544
Compare at $12,070
Save 56.2%GIA | 6.82ct | Radiant | E | VS1 | Ideal
From $17,280
Compare at $39,410
Save 84.2%IGI | 6.82ct | Radiant | G | VS2 | Ideal
From $1,756
Compare at $11,140
Save 85.8%IGI | 6.82ct | Radiant | G | VVS2 | Excellent
From $1,923
Compare at $13,550
Save 86.8%IGI | 6.82ct | Radiant | E | VS1 | Very Good
From $2,243
Compare at $17,050
Save 69.3%IGI | 6.83ct | Radiant | H | VS2 | Excellent
From $2,670
Compare at $8,710
Save 85.8%IGI | 6.83ct | Radiant | F | VVS2 | Excellent
From $2,180
Compare at $15,310
Save 74.6%IGI | 6.83ct | Radiant | F | VS1 | Excellent
From $2,808
Compare at $11,060
Save 67.2%GIA | 6.84ct | Radiant | G | VS1 | Excellent
From $8,027
Compare at $24,446
Save 59.5%IGI | 6.84ct | Radiant | G | VS1 | Ideal
From $3,228
Compare at $7,980
Save 78.3%IGI | 6.84ct | Radiant | G | VVS2 | Ideal
From $2,965
Compare at $13,640
IGI | 6.84ct | Radiant | FANCY | VS1 | Ideal
From $5,263
Compare at $7,507
Save 80.2%IGI | 6.85ct | Radiant | F | VS1 | Excellent
From $2,818
Compare at $14,210
Save 75.9%IGI | 6.85ct | Radiant | G | VS1 | Ideal
From $1,714
Compare at $7,110
Save 72.2%IGI | 6.86ct | Radiant | E | VS2 | Excellent
From $3,773
Compare at $13,560
Save 83.2%IGI | 6.86ct | Radiant | F | VS1 | Ideal
From $2,370
Compare at $14,110
Save 79.3%IGI | 6.87ct | Radiant | H | VVS2 | Ideal
From $348,340
Compare at $1,681,160
Save 53.7%IGI | 6.88ct | Radiant | F | VVS2 | Excellent
From $2,259
Compare at $4,877
Save 85.7%IGI | 6.88ct | Radiant | E | VS1 | Ideal
From $2,449
Compare at $17,100
Save 71.3%IGI | 6.88ct | Radiant | F | VS1 | Very Good
From $3,174
Compare at $11,060
Save 71.1%IGI | 6.89ct | Radiant | G | VVS2 | Very Good
From $3,962
Compare at $13,690
Save 61.8%IGI | 6.89ct | Radiant | G | VS2 | Very Good
From $1,590
Compare at $4,159
Save 72.4%IGI | 6.9ct | Radiant | D | VS2 | Excellent
From $3,456
Compare at $12,520
Save 85.1%IGI | 6.9ct | Radiant | E | VVS2 | Ideal
From $2,563
Compare at $17,210
Save 28.9%IGI | 6.9ct | Radiant | E | VS1 | Ideal
From $3,766
Compare at $5,297
Save 86.7%IGI | 6.9ct | Radiant | G | VVS2 | Excellent
From $1,807
Compare at $13,630
Entry pricing in this category starts around $740.
What to Know When Shopping for 6.8 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $38,982 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 $4,262 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 32 comparable stones in this segment. Prices start around $740 and go up to $39,722.
Based on the latest market data, the average asking price is about $5,924 with a median around $4,262.
The observed spread is roughly $38,982 across tracked listings, which is about 98.1% 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 $4,262, 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 $38,982 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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