2.5 Carat Round Lab Grown Diamond Prices Comparison
As of May 2026, 2.5 carat round lab grown diamonds usually range from $399 to $10,030, with an average price of $1,971.In the last month, prices for these diamonds are down 0.6%.Compare 11,010 verified listings across 14 retailers tracked by CaratRadar.
2.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 11,010 verified 2.5-carat round lab grown diamonds listed across 14 online retailers. Prices in this segment range from $399 to $10,030, with an average asking price of $1,971 and a median of $1,444.
The price spread of $9,631 (96.0% 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.
11,010 diamonds tracked in this segment
Price range: $399 to $10,030
Average price: $1,971
Median price: $1,444
Available across 14 retailers
Savings potential: up to 96.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
11,010
$399
$1,971
$1,444
$10,030
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 56.7%IGI | 2.5ct | Round | G | VS2 | Excellent
From $420
Compare at $971
Save 61%IGI | 2.52ct | Round | E | SI1 | Excellent
From $423
Compare at $1,086
Save 22.3%IGI | 2.5ct | Round | E | SI1 | Ideal
From $435
Compare at $560
Save 65.8%IGI | 2.59ct | Round | G | VVS2 | Excellent
From $441
Compare at $1,289
Save 47.7%IGI | 2.58ct | Round | G | VS1 | Ideal
From $445
Compare at $851
Save 55.4%IGI | 2.5ct | Round | G | VS1 | Ideal
From $454
Compare at $1,019
Save 56.5%IGI | 2.6ct | Round | G | VS2 | Ideal
From $455
Compare at $1,047
Save 57.7%IGI | 2.59ct | Round | G | VS1 | Ideal
From $459
Compare at $1,086
Save 57.7%IGI | 2.59ct | Round | G | VS1 | Excellent
From $459
Compare at $1,086
Save 55.9%IGI | 2.53ct | Round | G | VS1 | Excellent
From $460
Compare at $1,042
Save 55.1%IGI | 2.51ct | Round | G | VS1 | Ideal
From $462
Compare at $1,028
Save 62.1%IGI | 2.51ct | Round | G | VVS2 | Ideal
From $465
Compare at $1,227
Save 60.6%IGI | 2.5ct | Round | F | VS1 | Ideal
From $465
Compare at $1,181
Save 63%IGI | 2.59ct | Round | F | VS1 | Excellent
From $465
Compare at $1,257
Save 60.6%IGI | 2.5ct | Round | F | VS1 | Excellent
From $465
Compare at $1,181
Save 61.4%IGI | 2.53ct | Round | F | VS1 | Excellent
From $465
Compare at $1,206
Save 61.7%IGI | 2.55ct | Round | F | VS1 | Excellent
From $469
Compare at $1,224
Save 63.8%IGI | 2.6ct | Round | G | VVS2 | Ideal
From $472
Compare at $1,305
Save 79.3%IGI | 2.57ct | Round | G | VS2 | Ideal
From $473
Compare at $2,280
Save 62%IGI | 2.58ct | Round | F | VS1 | Ideal
From $475
Compare at $1,251
Save 71.4%IGI | 2.5ct | Round | F | VS2 | Excellent
From $477
Compare at $1,668
Save 71.4%IGI | 2.5ct | Round | F | VS2 | Excellent
From $477
Compare at $1,668
Save 71.4%IGI | 2.5ct | Round | F | VS2 | Excellent
From $477
Compare at $1,668
Save 61%IGI | 2.51ct | Round | G | VVS2 | Ideal
From $479
Compare at $1,227
Save 71.4%IGI | 2.52ct | Round | F | VS2 | Ideal
From $481
Compare at $1,681
Save 77.6%IGI | 2.55ct | Round | H | VS1 | Ideal
From $482
Compare at $2,150
Save 71.4%IGI | 2.53ct | Round | E | VS2 | Excellent
From $483
Compare at $1,688
Save 71.4%IGI | 2.53ct | Round | E | VS2 | Ideal
From $483
Compare at $1,688
Save 55.3%IGI | 2.5ct | Round | E | SI1 | Excellent
From $483
Compare at $1,080
Save 69.9%IGI | 2.5ct | Round | E | VS2 | Excellent
From $483
Compare at $1,607
Save 65.6%IGI | 2.51ct | Round | G | VVS2 | Ideal
From $484
Compare at $1,406
Save 71.4%IGI | 2.51ct | Round | G | VS1 | Excellent
From $484
Compare at $1,694
Save 56.4%IGI | 2.54ct | Round | E | SI1 | Excellent
From $484
Compare at $1,110
Save 60.6%IGI | 2.51ct | Round | G | VVS2 | Ideal
From $484
Compare at $1,229
Save 63%IGI | 2.6ct | Round | G | VVS2 | Excellent
From $484
Compare at $1,308
Save 71.4%IGI | 2.51ct | Round | G | VS1 | Ideal
From $484
Compare at $1,694
Save 79.6%IGI | 2.55ct | Round | H | VVS2 | Excellent
From $486
Compare at $2,380
Save 71.4%IGI | 2.55ct | Round | F | VS2 | Ideal
From $486
Compare at $1,701
Save 62.6%IGI | 2.52ct | Round | F | VVS2 | Ideal
From $486
Compare at $1,301
Save 63.3%IGI | 2.57ct | Round | E | VS1 | Excellent
From $486
Compare at $1,324
Save 71.4%IGI | 2.59ct | Round | F | VS1 | Ideal
From $489
Compare at $1,707
IGI | 2.51ct | Round | F | VVS2 | Ideal
From $490
Compare at $1,554
Save 48.5%IGI | 2.5ct | Round | G | VVS2 | Ideal
From $491
Compare at $954
Save 62.6%IGI | 2.53ct | Round | F | VVS2 | Excellent
From $492
Compare at $1,314
Save 59.3%IGI | 2.53ct | Round | F | VS1 | Ideal
From $492
Compare at $1,210
Save 67.8%IGI | 2.52ct | Round | F | VVS2 | Excellent
From $492
Compare at $1,529
Save 68.5%IGI | 2.52ct | Round | F | VVS2 | Ideal
From $492
Compare at $1,560
Save 61.5%IGI | 2.5ct | Round | F | VVS2 | Excellent
From $493
Compare at $1,281
Save 62.1%IGI | 2.54ct | Round | E | VS1 | Excellent
From $494
Compare at $1,302
IGI | 2.5ct | Round | F | VS1 | Excellent
From $494
Compare at $1,517
Entry pricing in this category starts around $399.
What to Know When Shopping for 2.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $9,631 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 $1,444 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.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 11,010 comparable stones in this segment. Prices start around $399 and go up to $10,030.
Based on the latest market data, the average asking price is about $1,971 with a median around $1,444.
The observed spread is roughly $9,631 across tracked listings, which is about 96.0% 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 $1,971. The median price is $1,444, 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 14 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 $9,631 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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