1.5 Carat Cushion Natural Diamond Prices Comparison
As of October 2026, 1.5 carat cushion natural diamonds in the 1.50–1.74 carat benchmark range usually range from $870 to $22,224, with an average price of $6,977.In the last month, prices for these diamonds are down 0.9%.Compare 5,203 verified listings across 14 retailers tracked by CaratRadar.
1.5 Carat Cushion Natural Diamond Market Overview
CaratRadar currently tracks 5,203 verified 1.5-carat cushion natural diamonds in the 1.50–1.74 carat benchmark range, listed across 14 online retailers. Prices in this segment range from $870 to $22,224, with an average asking price of $6,977 and a median of $6,576.
The price spread of $21,354 (96.1% 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 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.
5,203 diamonds tracked in the 1.50–1.74 carat benchmark
Price range: $870 to $22,224
Average price: $6,977
Median price: $6,576
Available across 14 retailers
Savings potential: up to 96.1%
Price Range Overview
As of Oct 14, 2026Real market range for this carat, shape, and diamond type.
5,203
$870
$6,977
$6,576
$22,224
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 34.4%GIA | 1.5ct | Cushion | L | SI1 | Ideal
From $1,437
Compare at $2,190
Save 11.4%IGI | 1.53ct | Cushion | K | I1 | Ideal
From $1,524
Compare at $1,721
Save 10.4%GIA | 1.51ct | Cushion | L | SI2 | Excellent
From $1,536
Compare at $1,714
Save 11.9%GIA | 1.51ct | Cushion | L | SI2 | Excellent
From $1,542
Compare at $1,749
Save 11.8%GIA | 1.51ct | Cushion | L | SI1 | Very Good
From $1,561
Compare at $1,770
Save 38.3%GIA | 1.5ct | Cushion | J | SI2 | Excellent
From $1,571
Compare at $2,548
Save 11.8%GIA | 1.5ct | Cushion | L | VS1 | Excellent
From $1,574
Compare at $1,784
Save 13%IGI | 1.51ct | Cushion | H | I1 | Ideal
From $1,649
Compare at $1,896
Save 21%IGI | 1.52ct | Cushion | K | SI1 | Good
From $1,699
Compare at $2,150
Save 49.3%GIA | 1.5ct | Cushion | L | SI1 | Excellent
From $1,700
Compare at $3,351
Save 11.2%GIA | 1.5ct | Cushion | L | SI1 | Excellent
From $1,701
Compare at $1,915
Save 11.2%GIA | 1.5ct | Cushion | K | SI2 | Excellent
From $1,714
Compare at $1,929
Save 11.1%GIA | 1.5ct | Cushion | L | SI1 | Excellent
From $1,719
Compare at $1,934
Save 27.2%GIA | 1.52ct | Cushion | J | SI2 | Good
From $1,721
Compare at $2,364
Save 11.9%GIA | 1.51ct | Cushion | K | SI1 | Ideal
From $1,742
Compare at $1,977
Save 13.2%IGI | 1.51ct | Cushion | H | I1 | Ideal
From $1,749
Compare at $2,016
Save 35.3%GIA | 1.5ct | Cushion | L | SI2 | Excellent
From $1,762
Compare at $2,721
Save 35.2%GIA | 1.51ct | Cushion | L | SI2 | Excellent
From $1,774
Compare at $2,739
Save 20.3%GIA | 1.51ct | Cushion | K | SI2 | Excellent
From $1,781
Compare at $2,234
Save 24.6%IGI | 1.5ct | Cushion | J | SI1 | Ideal
From $1,795
Compare at $2,381
Save 35.3%GIA | 1.53ct | Cushion | L | SI2 | Excellent
From $1,797
Compare at $2,775
Save 35.2%GIA | 1.71ct | Cushion | L | SI2 | Excellent
From $1,808
Compare at $2,792
Save 28.2%GIA | 1.51ct | Cushion | J | SI2 | Excellent
From $1,808
Compare at $2,520
Save 31.5%GIA | 1.51ct | Cushion | J | SI2 | Excellent
From $1,817
Compare at $2,652
Save 14%IGI | 1.52ct | Cushion | L | SI1 | Ideal
From $1,819
Compare at $2,114
Save 15.1%GIA | 1.53ct | Cushion | L | SI2 | Ideal
From $1,829
Compare at $2,156
Save 27.8%GIA | 1.51ct | Cushion | J | SI2 | Very Good
From $1,839
Compare at $2,548
Save 15.1%GIA | 1.51ct | Cushion | L | SI2 | Excellent
From $1,842
Compare at $2,171
Save 11.8%GIA | 1.5ct | Cushion | L | VS2 | Excellent
From $1,846
Compare at $2,093
Save 37.6%GIA | 1.51ct | Cushion | K | SI1 | Excellent
From $1,851
Compare at $2,966
Save 11.8%GIA | 1.5ct | Cushion | K | SI1 | Excellent
From $1,873
Compare at $2,123
Save 13.9%IGI | 1.51ct | Cushion | J | SI2 | Ideal
From $1,877
Compare at $2,181
Save 35.2%GIA | 1.5ct | Cushion | L | SI1 | Very Good
From $1,879
Compare at $2,901
Save 35.2%GIA | 1.5ct | Cushion | L | SI1 | Excellent
From $1,879
Compare at $2,901
Save 35.2%GIA | 1.5ct | Cushion | L | SI1 | Very Good
From $1,879
Compare at $2,901
Save 35.2%GIA | 1.51ct | Cushion | L | SI1 | Excellent
From $1,892
Compare at $2,920
Save 35.2%GIA | 1.51ct | Cushion | L | SI1 | Excellent
From $1,892
Compare at $2,920
Save 35.2%GIA | 1.51ct | Cushion | L | SI1 | Very Good
From $1,892
Compare at $2,920
Save 14%IGI | 1.5ct | Cushion | K | SI2 | Ideal
From $1,894
Compare at $2,203
Save 20.3%GIA | 1.51ct | Cushion | L | SI1 | Excellent
From $1,901
Compare at $2,386
Save 15.2%GIA | 1.51ct | Cushion | K | SI1 | Good
From $1,911
Compare at $2,252
Save 23.1%GIA | 1.5ct | Cushion | K | SI1 | Excellent
From $1,914
Compare at $2,488
Save 11.8%GIA | 1.5ct | Cushion | L | VS2 | Excellent
From $1,916
Compare at $2,173
Save 27.8%GIA | 1.51ct | Cushion | J | SI2 | Excellent
From $1,928
Compare at $2,672
Save 27.8%GIA | 1.51ct | Cushion | J | SI2 | Ideal
From $1,928
Compare at $2,672
Save 38.1%GIA | 1.51ct | Cushion | K | VS2 | Excellent
From $1,929
Compare at $3,117
Save 34.9%GIA | 1.51ct | Cushion | K | SI1 | Very Good
From $1,955
Compare at $3,004
Save 26.3%GIA | 1.5ct | Cushion | L | SI2 | Excellent
From $1,972
Compare at $2,676
Save 15.2%GIA | 1.5ct | Cushion | L | SI2 | Excellent
From $1,990
Compare at $2,346
Save 30.7%GIA | 1.52ct | Cushion | K | SI1 | Excellent
From $1,996
Compare at $2,879
Entry pricing in this benchmark range starts around $870.
What to Know When Shopping for 1.5 Carat Cushion Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,354 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 $6,576 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 5,203 comparable stones in the 1.50–1.74 carat benchmark range. Prices start around $870 and go up to $22,224.
Based on the latest market data, the average asking price is about $6,977 with a median around $6,576.
The observed spread is roughly $21,354 across tracked listings, which is about 96.1% from highest to lowest offer in the 1.50–1.74 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 $6,977. The median price is $6,576, 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 14 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 $21,354 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.
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Tracking Natural inventory for the 1.50–1.74 carat Cushion diamond benchmark.