2.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 2.5 carat cushion lab grown diamonds usually range from $442 to $10,892, with an average price of $2,420.In the last month, prices for these diamonds are down 4.3%.Compare 4,318 verified listings across 11 retailers tracked by CaratRadar.
2.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 4,318 verified 2.5-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $442 to $10,892, with an average asking price of $2,420 and a median of $1,713.
The price spread of $10,450 (95.9% 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.
4,318 diamonds tracked in this segment
Price range: $442 to $10,892
Average price: $2,420
Median price: $1,713
Available across 11 retailers
Savings potential: up to 95.9%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
4,318
$442
$2,420
$1,713
$10,892
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 59.4%GIA | 2.5ct | Cushion | H | VVS2 | Ideal
From $2,500
Compare at $6,160
Save 77.7%GIA | 2.5ct | Cushion | F | SI1 | Ideal
From $1,915
Compare at $8,570
Save 77%GIA | 2.5ct | Cushion | D | VS2 | Excellent
From $1,776
Compare at $7,710
Save 62.5%GIA | 2.5ct | Cushion | D | IF | Excellent
From $4,550
Compare at $12,140
Save 70.4%GIA | 2.5ct | Cushion | E | VVS2 | Excellent
From $1,728
Compare at $5,840
Save 77.1%GIA | 2.5ct | Cushion | E | VS1 | Excellent
From $1,442
Compare at $6,300
Save 70.8%GIA | 2.5ct | Cushion | D | VS1 | Excellent
From $1,657
Compare at $5,680
Save 76.3%GIA | 2.5ct | Cushion | F | VVS1 | Excellent
From $1,403
Compare at $5,920
Save 62.5%GIA | 2.5ct | Cushion | D | IF | Excellent
From $4,550
Compare at $12,140
Save 82.3%GIA | 2.5ct | Cushion | E | VVS1 | Very Good
From $1,900
Compare at $10,720
Save 13%GIA | 2.5ct | Cushion | D | FL | Ideal
From $20,760
Compare at $23,872
Save 76.6%GIA | 2.5ct | Cushion | D | VVS1 | Excellent
From $2,465
Compare at $10,540
Save 57.2%GIA | 2.5ct | Cushion | D | VVS1 | Excellent
From $3,249
Compare at $7,600
Save 67.9%GIA | 2.5ct | Cushion | E | VS1 | Ideal
From $1,660
Compare at $5,170
Save 77.8%GIA | 2.5ct | Cushion | D | IF | Excellent
From $8,539
Compare at $38,420
Save 62.5%GIA | 2.5ct | Cushion | D | IF | Excellent
From $4,550
Compare at $12,140
Save 77.1%GIA | 2.5ct | Cushion | D | VVS2 | Ideal
From $1,499
Compare at $6,540
Save 74.2%GIA | 2.5ct | Cushion | D | IF | Very Good
From $4,535
Compare at $17,580
Save 72.6%GIA | 2.5ct | Cushion | D | VVS2 | Excellent
From $1,786
Compare at $6,530
GIA | 2.5ct | Cushion | E | VS1 | Ideal
From $5,110
Save 72.3%GIA | 2.5ct | Cushion | D | VVS2 | Excellent
From $1,812
Compare at $6,530
Save 77.1%GIA | 2.5ct | Cushion | F | VVS2 | Excellent
From $1,428
Compare at $6,240
Save 28.8%IGI | 2.5ct | Cushion | F | VS1 | Very Good
From $1,520
Compare at $2,134
Save 44.6%IGI | 2.5ct | Cushion | F | SI1 | Ideal
From $1,534
Compare at $2,770
Save 30.8%IGI | 2.5ct | Cushion | H | VS1 | Ideal
From $1,836
Compare at $2,655
Save 75.9%IGI | 2.5ct | Cushion | G | VS1 | Ideal
From $961
Compare at $3,980
Save 75.9%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $961
Compare at $3,980
Save 75.1%IGI | 2.5ct | Cushion | G | VS2 | Ideal
From $960
Compare at $3,860
Save 61.8%IGI | 2.5ct | Cushion | H | VS1 | Ideal
From $1,836
Compare at $4,810
Save 63.4%IGI | 2.5ct | Cushion | G | SI1 | Ideal
From $777
Compare at $2,120
Save 78.2%IGI | 2.5ct | Cushion | H | VS1 | Ideal
From $605
Compare at $2,780
Save 78.1%IGI | 2.5ct | Cushion | G | VS1 | Ideal
From $872
Compare at $3,980
Save 57.2%IGI | 2.5ct | Cushion | G | IF | Very Good
From $3,630
Compare at $8,480
Save 73%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $1,059
Compare at $3,930
Save 70.3%IGI | 2.5ct | Cushion | E | SI1 | Ideal
From $852
Compare at $2,870
Save 63.5%IGI | 2.5ct | Cushion | I | VS1 | Ideal
From $1,021
Compare at $2,800
Save 67.7%IGI | 2.5ct | Cushion | H | VS2 | Excellent
From $2,190
Compare at $6,780
Save 78.9%IGI | 2.5ct | Cushion | F | VS2 | Ideal
From $645
Compare at $3,050
Save 70.6%IGI | 2.5ct | Cushion | F | SI1 | Ideal
From $663
Compare at $2,250
Save 83.6%IGI | 2.5ct | Cushion | D | VS1 | Ideal
From $920
Compare at $5,610
Save 79.1%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $834
Compare at $3,990
Save 80.2%IGI | 2.5ct | Cushion | E | VVS2 | Ideal
From $725
Compare at $3,660
Save 84.6%IGI | 2.5ct | Cushion | D | VVS2 | Ideal
From $865
Compare at $5,600
Save 77.4%IGI | 2.5ct | Cushion | D | VVS1 | Very Good
From $1,685
Compare at $7,460
Save 76.2%IGI | 2.5ct | Cushion | F | IF | Ideal
From $6,394
Compare at $26,920
Save 34.5%IGI | 2.5ct | Cushion | F | VS1 | Ideal
From $980
Compare at $1,498
Save 75.3%IGI | 2.5ct | Cushion | D | VVS1 | Ideal
From $3,117
Compare at $12,640
Save 75.6%IGI | 2.5ct | Cushion | E | VS1 | Ideal
From $1,324
Compare at $5,420
Save 79.8%IGI | 2.5ct | Cushion | D | VS1 | Ideal
From $1,314
Compare at $6,500
Save 75.6%IGI | 2.5ct | Cushion | E | VS1 | Ideal
From $1,324
Compare at $5,420
Entry pricing in this category starts around $442.
What to Know When Shopping for 2.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,450 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 $1,713 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 4,318 comparable stones in this segment. Prices start around $442 and go up to $10,892.
Based on the latest market data, the average asking price is about $2,420 with a median around $1,713.
The observed spread is roughly $10,450 across tracked listings, which is about 95.9% 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 $1,713, 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 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 $10,450 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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