1.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 1.5 carat cushion lab grown diamonds usually range from $278 to $5,665, with an average price of $1,173.In the last month, prices for these diamonds are down 0.5%.Compare 7,430 verified listings across 10 retailers tracked by CaratRadar.
1.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 7,430 verified 1.5-carat cushion lab grown diamonds listed across 10 online retailers. Prices in this segment range from $278 to $5,665, with an average asking price of $1,173 and a median of $920.
The price spread of $5,387 (95.1% 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 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.
7,430 diamonds tracked in this segment
Price range: $278 to $5,665
Average price: $1,173
Median price: $920
Available across 10 retailers
Savings potential: up to 95.1%
Price Range Overview
As of Apr 13, 2026Real market range for this carat, shape, and diamond type.
7,430
$278
$1,173
$920
$5,665
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GCAL | 1.5ct | Cushion | F | SI1 | Very Good
From $1,780
Compare at $1,880
Save 74.7%GCAL | 1.5ct | Cushion | E | VS1 | Excellent
From $634
Compare at $2,510
Save 72.1%GCAL | 1.5ct | Cushion | E | VS1 | Very Good
From $798
Compare at $2,860
Save 74.5%GCAL | 1.5ct | Cushion | D | VS1 | Ideal
From $791
Compare at $3,100
Save 72.4%GCAL | 1.5ct | Cushion | E | VS2 | Excellent
From $545
Compare at $1,970
Save 72.4%GCAL | 1.5ct | Cushion | E | VS2 | Excellent
From $545
Compare at $1,970
Save 72.4%GCAL | 1.5ct | Cushion | E | VS2 | Excellent
From $545
Compare at $1,970
Save 45.4%GCAL | 1.5ct | Cushion | F | VS2 | Excellent
From $571
Compare at $1,046
Save 62.6%GIA | 1.5ct | Cushion | D | VS2 | Excellent
From $784
Compare at $2,100
Save 40.2%GIA | 1.5ct | Cushion | D | VS2 | Ideal
From $2,100
Compare at $3,510
Save 38.8%GIA | 1.5ct | Cushion | F | VS1 | Ideal
From $2,100
Compare at $3,430
GIA | 1.5ct | Cushion | G | VS1 | Ideal
From $1,182
Compare at $1,250
Save 75.5%GIA | 1.5ct | Cushion | F | VVS2 | Ideal
From $912
Compare at $3,720
Save 36.7%GIA | 1.5ct | Cushion | F | VS1 | Excellent
From $853
Compare at $1,346
Save 58.7%GIA | 1.5ct | Cushion | E | VS1 | Excellent
From $967
Compare at $2,340
Save 73.3%GIA | 1.5ct | Cushion | E | VVS1 | Excellent
From $973
Compare at $3,650
Save 76.9%GIA | 1.5ct | Cushion | D | IF | Excellent
From $2,235
Compare at $9,670
Save 80.2%GIA | 1.5ct | Cushion | E | VVS2 | Excellent
From $1,287
Compare at $6,510
Save 70.6%GIA | 1.5ct | Cushion | D | IF | Ideal
From $3,038
Compare at $10,330
Save 58.2%GIA | 1.5ct | Cushion | F | VS1 | Excellent
From $954
Compare at $2,280
Save 37.1%GIA | 1.5ct | Cushion | H | VS1 | Very Good
From $1,780
Compare at $2,830
Save 69.2%GIA | 1.5ct | Cushion | E | VVS1 | Excellent
From $1,124
Compare at $3,650
Save 75.9%GIA | 1.5ct | Cushion | D | VVS1 | Excellent
From $881
Compare at $3,650
GIA | 1.5ct | Cushion | D | VVS2 | Ideal
From $2,710
Save 74%GIA | 1.5ct | Cushion | D | VVS1 | Ideal
From $1,711
Compare at $6,590
Save 76.9%GIA | 1.5ct | Cushion | D | IF | Excellent
From $2,235
Compare at $9,670
Save 16.2%GIA | 1.5ct | Cushion | H | VS2 | Excellent
From $8,490
Compare at $10,133
Save 33.3%GIA | 1.5ct | Cushion | D | VVS2 | Ideal
From $2,600
Compare at $3,900
Save 65.4%GIA | 1.5ct | Cushion | D | VS1 | Very Good
From $1,405
Compare at $4,060
Save 18.1%GIA | 1.5ct | Cushion | J | SI1 | Excellent
From $5,521
Compare at $6,739
GIA | 1.5ct | Cushion | D | SI1 | Ideal
From $1,270
Compare at $1,273
Save 40.2%GIA | 1.5ct | Cushion | D | VS2 | Ideal
From $2,100
Compare at $3,510
Save 76.5%GIA | 1.5ct | Cushion | F | VVS2 | Excellent
From $1,043
Compare at $4,440
Save 40.4%GIA | 1.5ct | Cushion | E | VS1 | Ideal
From $1,275
Compare at $2,140
GIA | 1.5ct | Cushion | D | VS1 | Excellent
From $959
Compare at $960
Save 58.6%GIA | 1.5ct | Cushion | D | IF | Excellent
From $4,281
Compare at $10,330
GIA | 1.5ct | Cushion | I | VS1 | Very Good
From $5,918
Compare at $6,067
Save 69.1%GIA | 1.5ct | Cushion | E | VS1 | Ideal
From $1,309
Compare at $4,230
Save 69.1%GIA | 1.5ct | Cushion | F | VVS2 | Ideal
From $1,309
Compare at $4,230
Save 75.9%GIA | 1.5ct | Cushion | D | VVS2 | Excellent
From $773
Compare at $3,200
Save 80.2%GIA | 1.5ct | Cushion | F | VVS2 | Excellent
From $1,309
Compare at $6,620
Save 79.8%GIA | 1.5ct | Cushion | E | SI1 | Excellent
From $1,037
Compare at $5,140
Save 72.5%GIA | 1.5ct | Cushion | D | VVS1 | Excellent
From $1,005
Compare at $3,650
Save 71.7%IGI | 1.5ct | Cushion | E | SI1 | Ideal
From $661
Compare at $2,340
Save 80.4%IGI | 1.5ct | Cushion | F | VS1 | Good
From $535
Compare at $2,730
Save 74.2%IGI | 1.5ct | Cushion | F | VS2 | Very Good
From $560
Compare at $2,170
IGI | 1.5ct | Cushion | E | SI1 | Excellent
From $1,099
Compare at $1,100
IGI | 1.5ct | Cushion | D | VS1 | Ideal
From $1,186
Compare at $1,190
Save 64.7%IGI | 1.5ct | Cushion | G | SI1 | Very Good
From $402
Compare at $1,140
IGI | 1.5ct | Cushion | F | SI2 | Ideal
From $453
Compare at $490
Entry pricing in this category starts around $278.
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 $5,387 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 $920 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 7,430 comparable stones in this segment. Prices start around $278 and go up to $5,665.
Based on the latest market data, the average asking price is about $1,173 with a median around $920.
The observed spread is roughly $5,387 across tracked listings, which is about 95.1% 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 $920, 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 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 $5,387 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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