2.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 2.5 carat radiant lab grown diamonds usually range from $341 to $10,540, with an average price of $2,171.In the last month, prices for these diamonds are down 6.6%.Compare 2,165 verified listings across 13 retailers tracked by CaratRadar.
2.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,165 verified 2.5-carat radiant lab grown diamonds listed across 13 online retailers. Prices in this segment range from $341 to $10,540, with an average asking price of $2,171 and a median of $1,529.
The price spread of $10,199 (96.8% 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.
2,165 diamonds tracked in this segment
Price range: $341 to $10,540
Average price: $2,171
Median price: $1,529
Available across 13 retailers
Savings potential: up to 96.8%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
2,165
$341
$2,171
$1,529
$10,540
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 61.4%IGI | 2.5ct | Radiant | H | VS1 | Ideal
From $386
Compare at $1,000
Save 67.7%IGI | 2.59ct | Radiant | H | VVS2 | Very Good
From $400
Compare at $1,239
Save 30.7%IGI | 2.56ct | Radiant | G | VS1 | Very Good
From $424
Compare at $612
Save 29.7%IGI | 2.55ct | Radiant | G | VS1 | Very Good
From $428
Compare at $609
Save 29.7%IGI | 2.52ct | Radiant | G | VS1 | Very Good
From $429
Compare at $610
Save 30.5%IGI | 2.59ct | Radiant | G | VS1 | Very Good
From $430
Compare at $619
Save 29.6%IGI | 2.57ct | Radiant | G | VS1 | Very Good
From $432
Compare at $614
Save 30.4%IGI | 2.5ct | Radiant | G | VVS2 | Very Good
From $432
Compare at $621
Save 29.5%IGI | 2.55ct | Radiant | G | VS1 | Very Good
From $435
Compare at $617
Save 30.7%IGI | 2.54ct | Radiant | G | VVS2 | Very Good
From $438
Compare at $632
Save 62.8%IGI | 2.51ct | Radiant | H | VVS2 | Ideal
From $439
Compare at $1,180
Save 30.7%IGI | 2.58ct | Radiant | G | VVS2 | Very Good
From $440
Compare at $635
Save 29.6%IGI | 2.58ct | Radiant | G | VS1 | Very Good
From $440
Compare at $625
Save 61.9%IGI | 2.51ct | Radiant | E | VS2 | Very Good
From $456
Compare at $1,196
Save 62.3%IGI | 2.54ct | Radiant | G | VVS2 | Very Good
From $461
Compare at $1,222
Save 62.3%IGI | 2.54ct | Radiant | E | VS2 | Very Good
From $461
Compare at $1,222
Save 61.4%IGI | 2.52ct | Radiant | E | VS2 | Ideal
From $467
Compare at $1,210
Save 23.2%IGI | 2.54ct | Radiant | F | VS1 | Very Good
From $468
Compare at $609
Save 62.7%IGI | 2.58ct | Radiant | G | VVS2 | Very Good
From $469
Compare at $1,259
Save 63%IGI | 2.58ct | Radiant | F | VS1 | Very Good
From $469
Compare at $1,268
Save 76.7%IGI | 2.55ct | Radiant | F | VS1 | Ideal
From $469
Compare at $2,010
Save 58.6%IGI | 2.59ct | Radiant | H | VS1 | Ideal
From $479
Compare at $1,157
Save 61.8%IGI | 2.5ct | Radiant | E | VS1 | Very Good
From $483
Compare at $1,266
Save 74.6%IGI | 2.5ct | Radiant | F | VS1 | Excellent
From $483
Compare at $1,900
Save 62.1%IGI | 2.51ct | Radiant | E | VS1 | Very Good
From $484
Compare at $1,276
Save 74.9%IGI | 2.54ct | Radiant | F | VS1 | Ideal
From $484
Compare at $1,930
Save 59.7%IGI | 2.51ct | Radiant | E | VS2 | Very Good
From $484
Compare at $1,202
Save 75.6%IGI | 2.51ct | Radiant | F | VS1 | Ideal
From $484
Compare at $1,980
Save 23.3%IGI | 2.51ct | Radiant | F | VS1 | Very Good
From $484
Compare at $631
Save 59%IGI | 2.5ct | Radiant | E | VS2 | Very Good
From $486
Compare at $1,186
Save 75.6%IGI | 2.52ct | Radiant | F | VS1 | Very Good
From $486
Compare at $1,990
Save 23.2%IGI | 2.52ct | Radiant | F | VS1 | Excellent
From $486
Compare at $633
Save 23.2%IGI | 2.55ct | Radiant | F | VS1 | Very Good
From $486
Compare at $633
Save 58.3%IGI | 2.51ct | Radiant | F | VS2 | Very Good
From $488
Compare at $1,171
Save 74.5%IGI | 2.53ct | Radiant | F | VS1 | Ideal
From $489
Compare at $1,920
Save 23.1%IGI | 2.53ct | Radiant | F | VS1 | Ideal
From $489
Compare at $636
Save 74.5%IGI | 2.53ct | Radiant | F | VS1 | Excellent
From $489
Compare at $1,920
Save 23.1%IGI | 2.5ct | Radiant | F | VS1 | Very Good
From $489
Compare at $636
Save 75.3%IGI | 2.51ct | Radiant | F | VS1 | Very Good
From $490
Compare at $1,980
Save 75.3%IGI | 2.51ct | Radiant | F | VS1 | Ideal
From $490
Compare at $1,980
Save 23.2%IGI | 2.51ct | Radiant | F | VS1 | Ideal
From $490
Compare at $638
Save 79.8%IGI | 2.57ct | Radiant | G | VS1 | Very Good
From $491
Compare at $2,430
Save 62.6%IGI | 2.55ct | Radiant | E | VS1 | Excellent
From $492
Compare at $1,314
Save 23.1%IGI | 2.52ct | Radiant | F | VS1 | Ideal
From $492
Compare at $640
Save 23.1%IGI | 2.52ct | Radiant | F | VS1 | Very Good
From $492
Compare at $640
Save 75.3%IGI | 2.52ct | Radiant | F | VS1 | Ideal
From $492
Compare at $1,990
Save 74.3%IGI | 2.52ct | Radiant | F | VS1 | Very Good
From $492
Compare at $1,915
Save 59.6%IGI | 2.5ct | Radiant | F | VS1 | Very Good
From $494
Compare at $1,223
Save 58.8%IGI | 2.54ct | Radiant | F | VS2 | Very Good
From $494
Compare at $1,198
Save 74.6%IGI | 2.56ct | Radiant | F | VS1 | Ideal
From $494
Compare at $1,945
Entry pricing in this category starts around $341.
What to Know When Shopping for 2.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,199 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 $1,529 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 2,165 comparable stones in this segment. Prices start around $341 and go up to $10,540.
Based on the latest market data, the average asking price is about $2,171 with a median around $1,529.
The observed spread is roughly $10,199 across tracked listings, which is about 96.8% 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 $2,171. The median price is $1,529, 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 $10,199 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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