8 Carat Cushion Natural Diamond Prices Comparison
As of October 2026, 8 carat cushion natural diamonds in the 8.00–8.99 carat benchmark range usually range from $40,789 to $1,687,140, with an average price of $224,410.In the last month, prices for these diamonds are down 1.8%.Compare 35 verified listings across 9 retailers tracked by CaratRadar.
8 Carat Cushion Natural Diamond Market Overview
CaratRadar currently tracks 35 verified 8-carat cushion natural diamonds in the 8.00–8.99 carat benchmark range, listed across 9 online retailers. Prices in this segment range from $40,789 to $1,687,140, with an average asking price of $224,410 and a median of $188,681.
The price spread of $1,646,351 (97.6% 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.
35 diamonds tracked in the 8.00–8.99 carat benchmark
Price range: $40,789 to $1,687,140
Average price: $224,410
Median price: $188,681
Available across 9 retailers
Savings potential: up to 97.6%
Price Range Overview
As of Oct 13, 2026Real market range for this carat, shape, and diamond type.
35
$40,789
$224,410
$188,681
$1,687,140
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.
Save 36.4%GIA | 8.05ct | Cushion | K | SI2 | Ideal
From $88,125
Compare at $138,561
Save 17.1%GIA | 8.04ct | Cushion | L | SI1 | Very Good
From $89,659
Compare at $108,118
Save 24%GIA | 8.26ct | Cushion | K | VS2 | Good
From $99,924
Compare at $131,558
GIA | 8.05ct | Cushion | K | VS1 | Very Good
From $108,826
Compare at $110,393
IGI | 8.03ct | Cushion | I | VS2 | Ideal
From $112,485
Compare at $124,151
Save 13.2%GIA | 8.25ct | Cushion | J | SI1 | Good
From $113,112
Compare at $130,371
Save 23.3%GIA | 8.88ct | Cushion | K | SI1 | Very Good
From $117,217
Compare at $152,816
Save 11.3%GIA | 8.03ct | Cushion | J | SI1 | Ideal
From $123,311
Compare at $139,019
Save 10.4%GIA | 8.02ct | Cushion | J | SI2 | Excellent
From $134,973
Compare at $150,636
Save 18.8%GIA | 8.3ct | Cushion | I | SI2 | Very Good
From $136,006
Compare at $167,492
GIA | 8.21ct | Cushion | J | SI2 | Ideal
From $141,933
Compare at $142,080
Save 22%GIA | 8.01ct | Cushion | I | SI2 | Excellent
From $143,387
Compare at $183,830
Save 20.3%GIA | 8.06ct | Cushion | J | VS2 | Ideal
From $143,542
Compare at $180,142
GIA | 8.84ct | Cushion | K | SI2 | Very Good
From $149,934
Compare at $161,874
Save 14.7%GIA | 8.01ct | Cushion | I | SI2 | Excellent
From $154,014
Compare at $180,651
GIA | 8.06ct | Cushion | J | VS2 | Excellent
From $158,247
Compare at $168,150
Save 18.8%GIA | 8.11ct | Cushion | F | VS2 | Excellent
From $164,336
Compare at $202,365
Save 23.3%GIA | 8.01ct | Cushion | I | VS2 | Excellent
From $181,440
Compare at $236,507
Save 23.3%GIA | 8.03ct | Cushion | J | IF | Ideal
From $182,753
Compare at $238,219
Save 18.8%GIA | 8.15ct | Cushion | J | IF | Ideal
From $185,484
Compare at $228,399
Save 14.8%GIA | 8.95ct | Cushion | J | VVS2 | Excellent
From $194,471
Compare at $228,138
Save 14.8%GIA | 8.19ct | Cushion | H | VS2 | Excellent
From $215,425
Compare at $252,734
Save 15%GIA | 8.04ct | Cushion | H | VS1 | Very Good
From $218,434
Compare at $256,950
Save 12.1%GIA | 8.26ct | Cushion | H | VS2 | Excellent
From $245,093
Compare at $278,775
Save 18.5%GIA | 8.02ct | Cushion | G | VS2 | Excellent
From $272,247
Compare at $334,158
Save 22%GIA | 8.52ct | Cushion | H | VVS1 | Excellent
From $276,324
Compare at $354,262
Save 23.1%GIA | 8.88ct | Cushion | E | VS2 | Very Good
From $285,600
Compare at $371,405
GIA | 8.02ct | Cushion | G | VS2 | Ideal
From $294,156
Compare at $311,410
Save 22%GIA | 8.03ct | Cushion | H | VVS2 | Excellent
From $294,912
Compare at $378,093
Save 15.4%GIA | 8.02ct | Cushion | G | VVS1 | Very Good
From $300,798
Compare at $355,586
Save 22.1%GIA | 8.02ct | Cushion | D | SI1 | Ideal
From $322,103
Compare at $413,614
Save 37.2%GIA | 8.01ct | Cushion | G | VS1 | Excellent
From $327,038
Compare at $520,850
Save 28.6%GIA | 8.11ct | Cushion | F | VVS1 | Ideal
From $348,518
Compare at $488,121
Save 37.2%GIA | 8.01ct | Cushion | F | VS1 | Excellent
From $385,699
Compare at $614,195
GIA | 8.04ct | Cushion | D | VVS2 | Very Good
From $531,870
Compare at $533,401
Entry pricing in this benchmark range starts around $40,789.
What to Know When Shopping for 8 Carat Cushion Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,646,351 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 $188,681 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 35 comparable stones in the 8.00–8.99 carat benchmark range. Prices start around $40,789 and go up to $1,687,140.
Based on the latest market data, the average asking price is about $224,410 with a median around $188,681.
The observed spread is roughly $1,646,351 across tracked listings, which is about 97.6% from highest to lowest offer in the 8.00–8.99 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 $224,410. The median price is $188,681, 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 9 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 $1,646,351 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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Tracking Natural inventory for the 8.00–8.99 carat Cushion diamond benchmark.