2.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 2.5 carat cushion lab grown diamonds usually range from $378 to $9,207, with an average price of $1,968.In the last 3 months, prices for these diamonds are down 14.6%.Compare 4,678 verified listings across 13 retailers tracked by CaratRadar.
2.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 4,678 verified 2.5-carat cushion lab grown diamonds listed across 13 online retailers. Prices in this segment range from $378 to $9,207, with an average asking price of $1,968 and a median of $1,308.
The price spread of $8,829 (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.
4,678 diamonds tracked in this segment
Price range: $378 to $9,207
Average price: $1,968
Median price: $1,308
Available across 13 retailers
Savings potential: up to 95.9%
Price Range Overview
As of May 28, 2026Real market range for this carat, shape, and diamond type.
4,678
$378
$1,968
$1,308
$9,207
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 79.9%IGI | 2.58ct | Cushion | H | VS2 | Very Good
From $387
Compare at $1,930
Save 80%IGI | 2.58ct | Cushion | H | VS1 | Very Good
From $405
Compare at $2,020
IGI | 2.54ct | Cushion | F | SI1 | Very Good
From $410
Compare at $1,241
IGI | 2.58ct | Cushion | H | VS2 | Very Good
From $410
Compare at $2,040
Save 58.3%IGI | 2.52ct | Cushion | I | VVS2 | Ideal
From $412
Compare at $987
Save 48.4%IGI | 2.59ct | Cushion | G | VS2 | Very Good
From $423
Compare at $819
IGI | 2.59ct | Cushion | F | SI1 | Very Good
From $424
Compare at $1,289
Save 46.5%IGI | 2.59ct | Cushion | G | VS1 | Very Good
From $428
Compare at $799
IGI | 2.59ct | Cushion | G | VS2 | Very Good
From $433
Compare at $829
Save 41.8%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $438
Compare at $752
Save 40.7%IGI | 2.51ct | Cushion | G | VS1 | Very Good
From $445
Compare at $751
Save 41.8%IGI | 2.51ct | Cushion | G | VS1 | Very Good
From $445
Compare at $765
Save 40.7%IGI | 2.52ct | Cushion | G | VS1 | Very Good
From $447
Compare at $754
IGI | 2.53ct | Cushion | G | VS1 | Very Good
From $448
Compare at $775
Save 62.4%IGI | 2.52ct | Cushion | G | VVS2 | Very Good
From $452
Compare at $1,203
Save 47.3%IGI | 2.58ct | Cushion | G | VS2 | Very Good
From $453
Compare at $860
Save 71.4%IGI | 2.5ct | Cushion | G | VS1 | Good
From $454
Compare at $1,588
Save 71.4%IGI | 2.51ct | Cushion | G | VS1 | Very Good
From $456
Compare at $1,595
Save 71.4%IGI | 2.52ct | Cushion | G | VS1 | Very Good
From $458
Compare at $1,601
Save 71.4%IGI | 2.53ct | Cushion | G | VS1 | Very Good
From $460
Compare at $1,607
IGI | 2.53ct | Cushion | F | VS2 | Very Good
From $460
Compare at $805
Save 40.8%IGI | 2.54ct | Cushion | F | VS2 | Very Good
From $461
Compare at $779
Save 55.6%IGI | 2.52ct | Cushion | G | VS2 | Very Good
From $463
Compare at $1,043
Save 55.5%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $465
Compare at $1,044
IGI | 2.5ct | Cushion | H | VVS2 | Very Good
From $465
Compare at $825
Save 55.5%IGI | 2.5ct | Cushion | G | VS1 | Very Good
From $465
Compare at $1,044
Save 71.4%IGI | 2.57ct | Cushion | G | VS1 | Very Good
From $467
Compare at $1,633
IGI | 2.54ct | Cushion | F | VS2 | Very Good
From $468
Compare at $789
Save 55.5%IGI | 2.51ct | Cushion | G | VS1 | Very Good
From $468
Compare at $1,052
Save 55.5%IGI | 2.51ct | Cushion | G | VS1 | Very Good
From $468
Compare at $1,052
IGI | 2.55ct | Cushion | G | VVS2 | Very Good
From $469
Compare at $896
IGI | 2.53ct | Cushion | G | VS1 | Very Good
From $471
Compare at $1,067
Save 47.9%IGI | 2.57ct | Cushion | F | VS2 | Very Good
From $477
Compare at $915
Save 59.4%IGI | 2.52ct | Cushion | F | VS2 | Very Good
From $481
Compare at $1,185
Save 59.4%IGI | 2.52ct | Cushion | F | VS2 | Very Good
From $481
Compare at $1,185
IGI | 2.52ct | Cushion | F | VS2 | Very Good
From $481
Compare at $1,185
IGI | 2.5ct | Cushion | F | VS2 | Very Good
From $483
Compare at $1,169
Save 58.9%IGI | 2.51ct | Cushion | F | VS2 | Very Good
From $484
Compare at $1,179
Save 59.8%IGI | 2.54ct | Cushion | F | VS2 | Very Good
From $484
Compare at $1,203
Save 77.1%IGI | 2.5ct | Cushion | G | SI1 | Ideal
From $486
Compare at $2,120
Save 59.1%IGI | 2.53ct | Cushion | F | VS2 | Very Good
From $489
Compare at $1,196
Save 41.1%IGI | 2.5ct | Cushion | F | VS1 | Very Good
From $489
Compare at $830
IGI | 2.58ct | Cushion | F | VS1 | Very Good
From $490
Compare at $906
Save 40.8%IGI | 2.51ct | Cushion | F | VS1 | Very Good
From $490
Compare at $827
Save 58.7%IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
Save 58.7%IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
IGI | 2.5ct | Cushion | E | VS2 | Very Good
From $494
Compare at $1,196
Entry pricing in this category starts around $378.
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 $8,829 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 $1,308 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 4,678 comparable stones in this segment. Prices start around $378 and go up to $9,207.
Based on the latest market data, the average asking price is about $1,968 with a median around $1,308.
The observed spread is roughly $8,829 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 completed market data, the fair market benchmark is $1,968. The median price is $1,308, 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 13 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 $8,829 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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