1.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 1.5 carat cushion lab grown diamonds usually range from $191 to $5,130, with an average price of $1,076.In the last month, prices for these diamonds are down 4.4%.Compare 6,676 verified listings across 11 retailers tracked by CaratRadar.
1.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 6,676 verified 1.5-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $191 to $5,130, with an average asking price of $1,076 and a median of $780.
The price spread of $4,939 (96.3% 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.
6,676 diamonds tracked in this segment
Price range: $191 to $5,130
Average price: $1,076
Median price: $780
Available across 11 retailers
Savings potential: up to 96.3%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
6,676
$191
$1,076
$780
$5,130
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 46.2%IGI | 1.56ct | Cushion | H | VVS2 | Ideal
From $223
Compare at $414
Save 70.2%IGI | 1.52ct | Cushion | G | SI1 | Ideal
From $228
Compare at $766
Save 78.1%IGI | 1.52ct | Cushion | D | SI2 | Ideal
From $239
Compare at $1,090
Save 45.6%IGI | 1.5ct | Cushion | G | VVS2 | Very Good
From $239
Compare at $439
Save 47.5%IGI | 1.51ct | Cushion | G | VVS2 | Very Good
From $241
Compare at $459
Save 79.1%IGI | 1.51ct | Cushion | E | SI1 | Ideal
From $244
Compare at $1,170
Save 74.5%IGI | 1.51ct | Cushion | D | SI1 | Ideal
From $244
Compare at $956
Save 78%IGI | 1.5ct | Cushion | F | SI1 | Ideal
From $249
Compare at $1,130
Save 57.8%IGI | 1.5ct | Cushion | G | VVS2 | Very Good
From $253
Compare at $599
Save 57.2%IGI | 1.57ct | Cushion | G | VS1 | Ideal
From $257
Compare at $601
Save 67.4%IGI | 1.51ct | Cushion | D | SI1 | Ideal
From $258
Compare at $791
Save 70.9%IGI | 1.51ct | Cushion | G | VS1 | Very Good
From $258
Compare at $887
Save 74.4%IGI | 1.6ct | Cushion | D | SI1 | Ideal
From $259
Compare at $1,013
Save 78.6%IGI | 1.6ct | Cushion | H | VS1 | Ideal
From $259
Compare at $1,210
Save 44%IGI | 1.5ct | Cushion | F | SI2 | Ideal
From $260
Compare at $464
Save 58.5%IGI | 1.56ct | Cushion | E | SI1 | Ideal
From $260
Compare at $627
Save 70.9%IGI | 1.5ct | Cushion | F | VS2 | Very Good
From $260
Compare at $893
Save 55.6%IGI | 1.51ct | Cushion | E | SI1 | Ideal
From $263
Compare at $593
Save 59%IGI | 1.51ct | Cushion | D | VS2 | Ideal
From $265
Compare at $647
Save 70.9%IGI | 1.52ct | Cushion | F | VS1 | Excellent
From $267
Compare at $917
Save 50.9%IGI | 1.52ct | Cushion | F | VS1 | Excellent
From $268
Compare at $546
Save 70.9%IGI | 1.6ct | Cushion | F | VS2 | Very Good
From $270
Compare at $928
Save 55.9%IGI | 1.57ct | Cushion | G | VS1 | Very Good
From $272
Compare at $617
Save 49.1%IGI | 1.56ct | Cushion | G | VVS2 | Ideal
From $273
Compare at $536
Save 70.9%IGI | 1.56ct | Cushion | E | VS2 | Very Good
From $274
Compare at $942
Save 70.9%IGI | 1.58ct | Cushion | F | VS2 | Very Good
From $274
Compare at $941
Save 61.6%IGI | 1.58ct | Cushion | F | VS1 | Very Good
From $274
Compare at $713
Save 70.9%IGI | 1.6ct | Cushion | E | VS2 | Very Good
From $274
Compare at $940
Save 50.9%IGI | 1.58ct | Cushion | F | VS2 | Very Good
From $275
Compare at $561
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 72.7%IGI | 1.5ct | Cushion | D | VS2 | Very Good
From $277
Compare at $1,013
Save 71%IGI | 1.58ct | Cushion | E | VS2 | Ideal
From $277
Compare at $954
Save 71%IGI | 1.58ct | Cushion | E | VS2 | Ideal
From $277
Compare at $954
Save 58.2%IGI | 1.51ct | Cushion | F | VS1 | Ideal
From $277
Compare at $662
Save 71%IGI | 1.58ct | Cushion | E | VS2 | Very Good
From $277
Compare at $954
Save 60.4%IGI | 1.6ct | Cushion | E | VS2 | Ideal
From $277
Compare at $699
Save 58.9%IGI | 1.59ct | Cushion | F | VS2 | Very Good
From $278
Compare at $676
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Excellent
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Very Good
From $279
Compare at $1,019
Save 72.6%IGI | 1.51ct | Cushion | D | VS2 | Excellent
From $279
Compare at $1,019
Entry pricing in this category starts around $191.
What to Know When Shopping for 1.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,939 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 $780 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 6,676 comparable stones in this segment. Prices start around $191 and go up to $5,130.
Based on the latest market data, the average asking price is about $1,076 with a median around $780.
The observed spread is roughly $4,939 across tracked listings, which is about 96.3% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $1,076. The median price is $780, 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 11 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 $4,939 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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