6.8 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 6.8 carat radiant lab grown diamonds usually range from $1,358 to $17,280, with an average price of $3,059.In the last month, prices for these diamonds are down 3%.Compare 44 verified listings across 5 retailers tracked by CaratRadar.
6.8 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 44 verified 6.8-carat radiant lab grown diamonds listed across 5 online retailers. Prices in this segment range from $1,358 to $17,280, with an average asking price of $3,059 and a median of $1,974.
The price spread of $15,922 (92.1% 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.
44 diamonds tracked in this segment
Price range: $1,358 to $17,280
Average price: $3,059
Median price: $1,974
Available across 5 retailers
Savings potential: up to 92.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
44
$1,358
$3,059
$1,974
$17,280
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 89%6.75ct | Radiant | G | VS1 | Ideal
From $1,579
Compare at $14,340
IGISave 72.9%6.75ct | Radiant | F | VS1 | Ideal
From $1,446
Compare at $5,330
IGISave 81.3%6.75ct | Radiant | E | VS1 | Very Good
From $2,563
Compare at $13,700
6.75ct | Radiant | F | VVS2 | Ideal
From $1,806
Compare at $6,885
6.75ct | Radiant | FANCY | VVS2 | Excellent
From $6,048
Compare at $8,774
IGISave 83.4%6.75ct | Radiant | G | VS1 | Very Good
From $1,358
Compare at $8,180
IGISave 87%6.75ct | Radiant | F | VVS2 | Ideal
From $1,962
Compare at $15,040
IGISave 24.1%6.75ct | Radiant | E | VS1 | Very Good
From $2,330
Compare at $3,070
IGISave 85.8%6.76ct | Radiant | E | VVS2 | Ideal
From $2,384
Compare at $16,760
IGISave 76.1%6.76ct | Radiant | FANCY | VS1 | Excellent
From $3,213
Compare at $13,422
GIASave 72.3%6.76ct | Radiant | E | VVS1 | Excellent
From $13,436
Compare at $48,450
IGISave 85%6.76ct | Radiant | G | VVS2 | Ideal
From $1,569
Compare at $10,490
IGISave 65%6.76ct | Radiant | D | VS1 | Ideal
From $2,316
Compare at $6,620
IGISave 77.5%6.77ct | Radiant | G | VS1 | Excellent
From $1,668
Compare at $7,400
IGISave 86.1%6.77ct | Radiant | G | VS1 | Excellent
From $1,668
Compare at $12,010
IGISave 83.4%6.77ct | Radiant | F | VS2 | Very Good
From $1,985
Compare at $11,940
IGISave 81.4%6.77ct | Radiant | G | VS1 | Very Good
From $2,365
Compare at $12,690
IGISave 89.8%6.77ct | Radiant | F | VS1 | Excellent
From $1,419
Compare at $13,980
IGISave 82.3%6.77ct | Radiant | F | VS1 | Excellent
From $2,005
Compare at $11,300
IGISave 89.1%6.78ct | Radiant | G | VVS2 | Ideal
From $1,465
Compare at $13,390
IGISave 88.9%6.78ct | Radiant | E | VS1 | Excellent
From $1,869
Compare at $16,850
IGISave 78.7%6.79ct | Radiant | G | VS1 | Ideal
From $3,082
Compare at $14,450
IGISave 89.2%6.79ct | Radiant | G | VS2 | Ideal
From $1,425
Compare at $13,140
IGISave 82.2%6.79ct | Radiant | E | VS2 | Ideal
From $1,959
Compare at $10,990
IGISave 82.3%6.79ct | Radiant | F | VS1 | Excellent
From $2,010
Compare at $11,340
IGISave 72.4%6.79ct | Radiant | F | VS2 | Ideal
From $1,425
Compare at $5,160
GIASave 60.8%6.79ct | Radiant | F | VS2 | Ideal
From $12,780
Compare at $32,640
IGISave 89.5%6.8ct | Radiant | E | VS1 | Ideal
From $1,767
Compare at $16,900
IGISave 87.8%6.8ct | Radiant | E | VS1 | Ideal
From $2,069
Compare at $16,900
IGISave 78.8%6.8ct | Radiant | F | VS1 | Ideal
From $2,209
Compare at $10,420
IGISave 81.6%6.81ct | Radiant | G | VS1 | Very Good
From $1,368
Compare at $7,440
IGISave 88.2%6.81ct | Radiant | E | VS1 | Excellent
From $2,006
Compare at $16,930
IGISave 90%6.81ct | Radiant | G | VVS2 | Ideal
From $1,358
Compare at $13,510
IGISave 86.6%6.81ct | Radiant | G | VS1 | Ideal
From $1,939
Compare at $14,470
GIASave 56.2%6.82ct | Radiant | E | VS1 | Ideal
From $17,280
Compare at $39,410
IGISave 88.3%6.82ct | Radiant | G | VVS2 | Excellent
From $1,579
Compare at $13,550
IGISave 86.7%6.82ct | Radiant | G | VS2 | Ideal
From $1,756
Compare at $13,200
IGISave 88.5%6.83ct | Radiant | F | VVS2 | Excellent
From $1,763
Compare at $15,310
IGISave 82.3%6.83ct | Radiant | F | VS1 | Excellent
From $2,021
Compare at $11,400
IGISave 69.3%6.83ct | Radiant | H | VS2 | Excellent
From $2,670
Compare at $8,710
GIASave 67.2%6.84ct | Radiant | G | VS1 | Excellent
From $8,027
Compare at $24,446
IGISave 17%6.84ct | Radiant | F | VS1 | Ideal
From $1,462
Compare at $1,761
IGISave 78.3%6.84ct | Radiant | G | VVS2 | Ideal
From $2,963
Compare at $13,630
IGISave 59.5%6.84ct | Radiant | G | VS1 | Ideal
From $3,210
Compare at $7,920
Entry pricing in this category starts around $1,358.
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 $15,922 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 $1,974 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 44 comparable stones in this segment. Prices start around $1,358 and go up to $17,280.
Based on the latest market data, the average asking price is about $3,059 with a median around $1,974.
The observed spread is roughly $15,922 across tracked listings, which is about 92.1% 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 $1,974, 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 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 $15,922 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
6.7 Carat Radiant Lab Grown Diamond Prices
6.9 Carat Radiant Lab Grown Diamond Prices
6.6 Carat Radiant Lab Grown Diamond Prices
7 Carat Radiant Lab Grown Diamond Prices
6.5 Carat Radiant Lab Grown Diamond Prices
7.1 Carat Radiant Lab Grown Diamond Prices
6.4 Carat Radiant Lab Grown Diamond Prices
6.8 Carat Round Lab Grown Diamond Prices
6.8 Carat Oval Lab Grown Diamond Prices
6.8 Carat Emerald Lab Grown Diamond Prices
6.8 Carat Cushion Lab Grown Diamond Prices
6.8 Carat Marquise Lab Grown Diamond Prices
Tracking Lab Grown inventory for 6.8 carat Radiant diamonds.