6.8 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 6.8 carat cushion lab grown diamonds usually range from $1,433 to $22,552, with an average price of $2,549.In the last month, prices for these diamonds are down 5.5%.Compare 52 verified listings across 3 retailers tracked by CaratRadar.
6.8 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 52 verified 6.8-carat cushion lab grown diamonds listed across 3 online retailers. Prices in this segment range from $1,433 to $22,552, with an average asking price of $2,549 and a median of $1,901.
The price spread of $21,119 (93.6% 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.
52 diamonds tracked in this segment
Price range: $1,433 to $22,552
Average price: $2,549
Median price: $1,901
Available across 3 retailers
Savings potential: up to 93.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
52
$1,433
$2,549
$1,901
$22,552
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 82.7%6.75ct | Cushion | G | VS1 | Very Good
From $1,445
Compare at $8,340
IGISave 54.7%6.75ct | Cushion | F | VVS2 | Very Good
From $1,738
Compare at $3,841
IGISave 31.2%6.75ct | Cushion | E | VVS2 | Very Good
From $1,877
Compare at $2,730
IGISave 31.2%6.75ct | Cushion | E | VVS2 | Very Good
From $1,896
Compare at $2,758
IGISave 31.2%6.75ct | Cushion | E | VVS2 | Very Good
From $1,896
Compare at $2,758
IGISave 85.6%6.75ct | Cushion | E | VVS2 | Very Good
From $2,453
Compare at $17,070
IGISave 31.2%6.75ct | Cushion | E | VVS2 | Very Good
From $1,896
Compare at $2,758
IGISave 85.8%6.76ct | Cushion | E | VVS2 | Good
From $2,426
Compare at $17,090
IGISave 27.4%6.76ct | Cushion | F | VVS2 | Very Good
From $1,721
Compare at $2,371
IGISave 27.4%6.76ct | Cushion | F | VVS2 | Very Good
From $1,741
Compare at $2,399
IGISave 51.3%6.76ct | Cushion | E | VVS2 | Very Good
From $1,918
Compare at $3,937
IGISave 83.6%6.76ct | Cushion | F | VVS2 | Excellent
From $1,775
Compare at $10,810
GIASave 67.7%6.76ct | Cushion | D | VVS2 | Ideal
From $10,714
Compare at $33,140
IGISave 83.1%6.76ct | Cushion | H | VVS2 | Ideal
From $1,916
Compare at $11,370
IGISave 31.2%6.77ct | Cushion | E | VVS2 | Very Good
From $1,921
Compare at $2,794
IGISave 62%6.77ct | Cushion | F | VVS2 | Excellent
From $1,446
Compare at $3,810
IGISave 74.1%6.77ct | Cushion | G | VS1 | Ideal
From $3,743
Compare at $14,450
IGISave 61.3%6.77ct | Cushion | F | VVS2 | Ideal
From $2,080
Compare at $5,370
IGISave 54.3%6.77ct | Cushion | F | VS1 | Excellent
From $1,723
Compare at $3,770
IGISave 31.2%6.78ct | Cushion | E | VVS2 | Very Good
From $1,905
Compare at $2,770
IGISave 51.7%6.78ct | Cushion | E | VVS2 | Very Good
From $1,905
Compare at $3,947
IGISave 84.9%6.79ct | Cushion | F | VS1 | Ideal
From $1,433
Compare at $9,460
IGISave 31.2%6.79ct | Cushion | E | VVS2 | Very Good
From $1,908
Compare at $2,774
IGISave 27.4%6.79ct | Cushion | F | VVS2 | Very Good
From $1,749
Compare at $2,410
IGISave 27.5%6.79ct | Cushion | E | VS1 | Very Good
From $1,890
Compare at $2,606
IGISave 27.4%6.79ct | Cushion | F | VVS2 | Very Good
From $1,749
Compare at $2,410
IGISave 27.5%6.79ct | Cushion | E | VS1 | Very Good
From $1,850
Compare at $2,550
IGISave 81.5%6.8ct | Cushion | E | VVS2 | Very Good
From $2,616
Compare at $14,150
IGISave 31.2%6.8ct | Cushion | E | VVS2 | Very Good
From $1,910
Compare at $2,778
IGISave 31.2%6.8ct | Cushion | E | VVS2 | Very Good
From $1,910
Compare at $2,778
IGISave 27.5%6.8ct | Cushion | E | VS1 | Very Good
From $1,853
Compare at $2,554
GIASave 76%6.8ct | Cushion | G | VS1 | Excellent
From $4,771
Compare at $19,880
IGISave 62.1%6.81ct | Cushion | F | VVS2 | Excellent
From $1,454
Compare at $3,833
IGISave 31.2%6.81ct | Cushion | E | VVS2 | Very Good
From $1,913
Compare at $2,782
IGISave 31.2%6.81ct | Cushion | E | VVS2 | Very Good
From $1,913
Compare at $2,782
IGISave 31.2%6.82ct | Cushion | E | VVS2 | Very Good
From $1,916
Compare at $2,786
IGISave 31%6.82ct | Cushion | E | VVS2 | Very Good
From $1,942
Compare at $2,814
IGISave 54.1%6.82ct | Cushion | E | VS1 | Very Good
From $1,878
Compare at $4,090
IGISave 31.2%6.82ct | Cushion | E | VVS2 | Very Good
From $1,916
Compare at $2,786
IGISave 27.4%6.82ct | Cushion | F | VVS2 | Very Good
From $1,756
Compare at $2,420
IGISave 54.1%6.83ct | Cushion | E | VS1 | Very Good
From $1,880
Compare at $4,097
IGISave 87.4%6.83ct | Cushion | E | VS1 | Ideal
From $2,146
Compare at $17,090
IGISave 31.2%6.83ct | Cushion | E | VVS2 | Very Good
From $1,919
Compare at $2,790
IGISave 31.2%6.83ct | Cushion | E | VVS2 | Very Good
From $1,919
Compare at $2,790
IGISave 27.5%6.83ct | Cushion | E | VS1 | Very Good
From $1,880
Compare at $2,593
IGISave 81.7%6.83ct | Cushion | D | VVS2 | Very Good
From $2,791
Compare at $15,210
GIASave 77.1%6.83ct | Cushion | E | IF | Ideal
From $22,552
Compare at $98,646
IGISave 54.8%6.83ct | Cushion | F | VVS2 | Excellent
From $1,739
Compare at $3,843
IGISave 27.5%6.83ct | Cushion | E | VS1 | Very Good
From $1,880
Compare at $2,593
IGISave 66.8%6.84ct | Cushion | F | VVS2 | Excellent
From $1,570
Compare at $4,726
Entry pricing in this category starts around $1,433.
What to Know When Shopping for 6.8 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,119 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 $1,901 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.
- Cushion cuts come in standard and modified brilliant varieties. Modified brilliants tend to show more fire, while standard cushions have broader facets.
Frequently Asked Questions
We currently track 52 comparable stones in this segment. Prices start around $1,433 and go up to $22,552.
Based on the latest market data, the average asking price is about $2,549 with a median around $1,901.
The observed spread is roughly $21,119 across tracked listings, which is about 93.6% 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 $1,901, 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 3 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 $21,119 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 Cushion Lab Grown Diamond Prices
6.9 Carat Cushion Lab Grown Diamond Prices
6.6 Carat Cushion Lab Grown Diamond Prices
7 Carat Cushion Lab Grown Diamond Prices
6.5 Carat Cushion Lab Grown Diamond Prices
7.1 Carat Cushion Lab Grown Diamond Prices
6.4 Carat Cushion 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 Radiant Lab Grown Diamond Prices
6.8 Carat Marquise Lab Grown Diamond Prices
Tracking Lab Grown inventory for 6.8 carat Cushion diamonds.