6 Carat Cushion Natural Diamond Prices Comparison
As of October 2026, 6 carat cushion natural diamonds in the 6.00–6.99 carat benchmark range usually range from $2,266 to $543,576, with an average price of $126,195.In the last month, prices for these diamonds are up 1.5%.Compare 54 verified listings across 10 retailers tracked by CaratRadar.
6 Carat Cushion Natural Diamond Market Overview
CaratRadar currently tracks 54 verified 6-carat cushion natural diamonds in the 6.00–6.99 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $2,266 to $543,576, with an average asking price of $126,195 and a median of $114,269.
The price spread of $541,310 (99.6% 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 use the same benchmark range throughout the page and 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.
54 diamonds tracked in the 6.00–6.99 carat benchmark
Price range: $2,266 to $543,576
Average price: $126,195
Median price: $114,269
Available across 10 retailers
Savings potential: up to 99.6%
Price Range Overview
As of Oct 13, 2026Real market range for this carat, shape, and diamond type.
54
$2,266
$126,195
$114,269
$543,576
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
IGI | 6.01ct | Cushion | J | SI2 | Very Good
From $38,520
Compare at $41,627
HRD | 6.43ct | Cushion | J | VS1 | Excellent
From $38,633
Compare at $42,569
GIA | 6.01ct | Cushion | L | VS2 | Excellent
From $42,840
Compare at $43,918
Save 12.2%GIA | 6.2ct | Cushion | I | SI2 | Very Good
From $52,669
Compare at $60,013
Save 21.8%GIA | 6.01ct | Cushion | K | VS1 | Good
From $60,867
Compare at $77,873
Save 27.3%GIA | 6.01ct | Cushion | I | SI2 | Ideal
From $62,546
Compare at $86,003
Save 10.7%GIA | 6.01ct | Cushion | K | SI2 | Excellent
From $65,667
Compare at $73,559
Save 12.6%GIA | 6.22ct | Cushion | J | SI1 | Very Good
From $65,694
Compare at $75,177
Save 21.5%GIA | 6.02ct | Cushion | J | SI2 | Good
From $67,423
Compare at $85,921
Save 19.4%GIA | 6.06ct | Cushion | H | VVS1 | Very Good
From $69,950
Compare at $86,742
Save 11.1%IGI | 6ct | Cushion | F | SI2 | Very Good
From $78,209
Compare at $87,966
Save 12.6%GIA | 6.02ct | Cushion | H | IF | Good
From $79,229
Compare at $90,629
Save 17.1%GIA | 6.2ct | Cushion | K | VS2 | Excellent
From $80,608
Compare at $97,189
Save 22%GIA | 6.03ct | Cushion | I | VS2 | Ideal
From $82,897
Compare at $106,279
Save 26.8%GIA | 6.05ct | Cushion | J | SI1 | Excellent
From $86,542
Compare at $118,177
Save 12.5%GIA | 6.03ct | Cushion | F | SI1 | Very Good
From $89,272
Compare at $102,064
Save 21.8%GIA | 6.1ct | Cushion | K | VS1 | Very Good
From $89,860
Compare at $114,934
Save 17.1%GIA | 6.03ct | Cushion | J | VS1 | Ideal
From $90,468
Compare at $109,094
Save 12.6%GIA | 6.01ct | Cushion | I | VS1 | Very Good
From $95,505
Compare at $109,223
Save 21.8%GIA | 6.01ct | Cushion | J | VS2 | Ideal
From $103,961
Compare at $132,958
Save 13.3%GIA | 6.01ct | Cushion | J | VS1 | Very Good
From $105,476
Compare at $121,708
Save 22%GIA | 6.15ct | Cushion | I | SI1 | Excellent
From $105,774
Compare at $135,608
Save 11.7%GIA | 6.01ct | Cushion | G | VS1 | Very Good
From $106,097
Compare at $120,118
Save 23.3%GIA | 6.01ct | Cushion | I | VS1 | Very Good
From $121,461
Compare at $158,347
Save 14.7%GIA | 6.04ct | Cushion | E | SI1 | Excellent
From $123,639
Compare at $144,997
Save 22%GIA | 6.1ct | Cushion | E | VS1 | Excellent
From $127,395
Compare at $163,328
Save 22%GIA | 6.01ct | Cushion | G | VS2 | Excellent
From $128,329
Compare at $164,524
Save 12.1%GIA | 6.29ct | Cushion | H | SI1 | Excellent
From $132,752
Compare at $150,960
Save 23.3%GIA | 6.01ct | Cushion | G | SI1 | Very Good
From $138,615
Compare at $180,701
GIA | 6.02ct | Cushion | F | SI1 | Very Good
From $139,613
Compare at $139,756
Save 12.1%GIA | 6.06ct | Cushion | F | SI1 | Excellent
From $140,683
Compare at $159,984
Save 22%GIA | 6.53ct | Cushion | D | SI1 | Excellent
From $143,252
Compare at $183,656
Save 23.3%GIA | 6.07ct | Cushion | J | VVS2 | Excellent
From $146,759
Compare at $191,314
Save 26.4%GIA | 6.02ct | Cushion | F | VS2 | Excellent
From $152,644
Compare at $207,396
Save 23.3%GIA | 6.05ct | Cushion | G | SI1 | Good
From $152,917
Compare at $199,339
GIA | 6.04ct | Cushion | H | VS2 | Excellent
From $160,127
Compare at $160,130
Save 26.4%GIA | 6.5ct | Cushion | G | SI1 | Very Good
From $160,786
Compare at $218,459
Save 23.3%GIA | 6.02ct | Cushion | F | VS2 | Excellent
From $160,799
Compare at $209,609
Save 12.1%GIA | 6.01ct | Cushion | H | VS2 | Good
From $166,463
Compare at $189,315
Save 12.1%GIA | 6.01ct | Cushion | G | VS1 | Excellent
From $168,444
Compare at $191,569
GIA | 6.01ct | Cushion | H | VS2 | Excellent
From $173,213
Compare at $188,795
Save 23.3%GIA | 6.05ct | Cushion | D | SI2 | Excellent
From $174,948
Compare at $228,048
GIA | 6.03ct | Cushion | H | VVS2 | Very Good
From $176,525
Compare at $177,074
GIA | 6.01ct | Cushion | E | VS2 | Excellent
From $181,515
Compare at $191,540
Save 12.1%GIA | 6.02ct | Cushion | G | VS1 | Excellent
From $185,590
Compare at $211,076
Save 19%GIA | 6.02ct | Cushion | D | VVS2 | Very Good
From $191,858
Compare at $236,999
Save 23.3%GIA | 6.2ct | Cushion | F | VS1 | Very Good
From $206,112
Compare at $268,658
Save 17.2%GIA | 6.15ct | Cushion | E | VS1 | Very Good
From $214,759
Compare at $259,251
Save 22%GIA | 6.03ct | Cushion | F | VS2 | Excellent
From $218,426
Compare at $280,033
Save 13.1%GIA | 6.01ct | Cushion | D | FL | Good
From $303,938
Compare at $349,665
Entry pricing in this benchmark range starts around $2,266.
What to Know When Shopping for 6 Carat Cushion Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $541,310 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 $114,269 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 54 comparable stones in the 6.00–6.99 carat benchmark range. Prices start around $2,266 and go up to $543,576.
Based on the latest market data, the average asking price is about $126,195 with a median around $114,269.
The observed spread is roughly $541,310 across tracked listings, which is about 99.6% from highest to lowest offer in the 6.00–6.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $126,195. The median price is $114,269, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 10 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 $541,310 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
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Tracking Natural inventory for the 6.00–6.99 carat Cushion diamond benchmark.