2.5 Carat Round Natural Diamond Prices Comparison
As of May 2026, 2.5 carat round natural diamonds usually range from $716 to $75,944, with an average price of $27,874.In the last month, prices for these diamonds are up 0.9%.Compare 1,642 verified listings across 9 retailers tracked by CaratRadar.
2.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 1,642 verified 2.5-carat round natural diamonds listed across 9 online retailers. Prices in this segment range from $716 to $75,944, with an average asking price of $27,874 and a median of $26,340.
The price spread of $75,228 (99.1% 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.
1,642 diamonds tracked in this segment
Price range: $716 to $75,944
Average price: $27,874
Median price: $26,340
Available across 9 retailers
Savings potential: up to 99.1%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
1,642
$716
$27,874
$26,340
$75,944
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 37.5%GIA | 2.5ct | Round | K | SI2 | Excellent
From $6,555
Compare at $10,481
Save 14%IGI | 2.5ct | Round | K | SI1 | Excellent
From $6,600
Compare at $7,678
Save 26.9%GIA | 2.51ct | Round | L | SI1 | Very Good
From $8,002
Compare at $10,943
Save 11.1%GIA | 2.5ct | Round | L | SI2 | Very Good
From $8,149
Compare at $9,165
Save 12.9%GIA | 2.5ct | Round | K | SI2 | Very Good
From $8,154
Compare at $9,361
IGI | 2.5ct | Round | K | VVS2 | Very Good
From $8,550
Compare at $9,470
GIA | 2.5ct | Round | L | SI1 | Ideal
From $8,580
Compare at $9,010
Save 27.5%GIA | 2.54ct | Round | L | SI2 | Excellent
From $8,599
Compare at $11,860
GIA | 2.5ct | Round | K | SI2 | Very Good
From $8,635
Compare at $9,516
Save 15.4%GIA | 2.52ct | Round | L | SI1 | Ideal
From $8,659
Compare at $10,241
Save 12.2%GIA | 2.5ct | Round | L | SI2 | Excellent
From $8,802
Compare at $10,028
IGI | 2.5ct | Round | K | VS1 | Excellent
From $8,830
Compare at $9,786
GIA | 2.5ct | Round | K | SI2 | Excellent
From $9,074
Compare at $9,516
Save 19.3%GIA | 2.5ct | Round | L | SI2 | Excellent
From $9,142
Compare at $11,328
Save 30.7%GIA | 2.53ct | Round | L | SI1 | Excellent
From $9,170
Compare at $13,227
Save 13.9%IGI | 2.51ct | Round | K | VS1 | Excellent
From $9,175
Compare at $10,660
Save 26.6%GIA | 2.5ct | Round | L | SI2 | Excellent
From $9,198
Compare at $12,527
IGI | 2.5ct | Round | J | SI1 | Excellent
From $9,254
Compare at $9,320
IGI | 2.5ct | Round | K | VS1 | Excellent
From $9,290
Compare at $10,162
Save 40.7%GIA | 2.5ct | Round | K | SI1 | Very Good
From $9,490
Compare at $16,006
Save 19.5%GIA | 2.51ct | Round | L | SI1 | Excellent
From $9,518
Compare at $11,827
Save 12.5%GIA | 2.5ct | Round | L | SI1 | Very Good
From $9,523
Compare at $10,884
Save 26.5%GIA | 2.5ct | Round | L | SI1 | Excellent
From $9,570
Compare at $13,024
GIA | 2.5ct | Round | L | SI2 | Excellent
From $9,629
Compare at $10,017
Save 24.8%GIA | 2.5ct | Round | L | VS2 | Excellent
From $9,685
Compare at $12,880
Save 14.2%GIA | 2.5ct | Round | L | SI2 | Excellent
From $9,759
Compare at $11,370
Save 32.4%GIA | 2.51ct | Round | L | VS2 | Very Good
From $9,782
Compare at $14,462
Save 26.5%GIA | 2.51ct | Round | K | SI2 | Excellent
From $9,784
Compare at $13,310
Save 40.7%GIA | 2.5ct | Round | K | SI1 | Very Good
From $9,841
Compare at $16,598
Save 13.9%GIA | 2.5ct | Round | L | SI1 | Very Good
From $9,910
Compare at $11,515
Save 14%IGI | 2.5ct | Round | K | VS1 | Excellent
From $9,915
Compare at $11,530
IGI | 2.55ct | Round | K | VS2 | Excellent
From $9,935
Compare at $10,829
GIA | 2.5ct | Round | K | SI1 | Ideal
From $10,000
Compare at $10,958
Save 13.6%GIA | 2.5ct | Round | J | SI2 | Ideal
From $10,010
Compare at $11,580
Save 32.3%GIA | 2.51ct | Round | K | SI2 | Excellent
From $10,100
Compare at $14,924
Save 27.5%GIA | 2.52ct | Round | L | VS1 | Very Good
From $10,110
Compare at $13,953
Save 32.1%GIA | 2.5ct | Round | L | VS2 | Ideal
From $10,110
Compare at $14,882
Save 14%IGI | 2.5ct | Round | K | VS2 | Excellent
From $10,135
Compare at $11,790
Save 14.1%IGI | 2.52ct | Round | K | SI1 | Excellent
From $10,165
Compare at $11,828
Save 19.4%GIA | 2.57ct | Round | L | SI1 | Ideal
From $10,211
Compare at $12,671
Save 14%IGI | 2.53ct | Round | K | VS2 | Excellent
From $10,255
Compare at $11,931
Save 20.9%GIA | 2.52ct | Round | K | SI1 | Ideal
From $10,279
Compare at $13,003
Save 32%GIA | 2.5ct | Round | K | SI2 | Very Good
From $10,313
Compare at $15,161
Save 13.1%IGI | 2.5ct | Round | K | IF | Excellent
From $10,330
Compare at $11,887
GIA | 2.5ct | Round | K | SI1 | Ideal
From $10,450
Compare at $11,353
Save 22.7%GIA | 2.5ct | Round | K | SI2 | Excellent
From $10,468
Compare at $13,540
Save 27.5%GIA | 2.5ct | Round | L | VS2 | Very Good
From $10,472
Compare at $14,447
Save 37.7%GIA | 2.51ct | Round | K | SI2 | Excellent
From $10,517
Compare at $16,879
Save 27.5%GIA | 2.5ct | Round | L | SI1 | Excellent
From $10,527
Compare at $14,521
IGI | 2.5ct | Round | I | SI1 | Very Good
From $10,585
Compare at $10,610
Entry pricing in this category starts around $716.
What to Know When Shopping for 2.5 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $75,228 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 $26,340 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 1,642 comparable stones in this segment. Prices start around $716 and go up to $75,944.
Based on the latest market data, the average asking price is about $27,874 with a median around $26,340.
The observed spread is roughly $75,228 across tracked listings, which is about 99.1% 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 $27,874. The median price is $26,340, 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 9 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 $75,228 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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Tracking Natural inventory for 2.5 carat Round diamonds.