2.5 Carat Natural Diamond Prices Comparison
As of May 2026, the average price of a 2.5 carat natural diamond is $26,644.2.5 carat diamonds can cost anywhere from $716 to $75,875 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are up 0.7%.Compare 5,307 verified listings across 10 retailers in the tables below.
2.5 Carat Natural Diamond Market Overview
CaratRadar currently tracks 5,307 verified 2.5-carat natural diamonds listed across 10 online retailers. Prices in this segment range from $716 to $75,875, with an average asking price of $26,644 and a median of $25,873.
The price spread of $75,159 (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.
5,307 diamonds tracked in this segment
Price range: $716 to $75,875
Average price: $26,644
Median price: $25,873
Available across 10 retailers
Savings potential: up to 99.1%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
5,307
$716
$26,644
$25,873
$75,875
Price History
Price Comparison Matrix
2.5 Carat Natural Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 36.8%GIA | 2.5ct | Oval | L | SI2 | Good
From $5,087
Compare at $8,052
Save 22.4%GIA | 2.51ct | Cushion | L | SI2 | Excellent
From $5,446
Compare at $7,021
Save 15.7%IGI | 2.5ct | Oval | J | SI2 | Ideal
From $5,468
Compare at $6,490
Save 16.3%IGI | 2.5ct | Pear | K | VS1 | Very Good
From $5,565
Compare at $6,646
Save 38.7%GIA | 2.52ct | Cushion | K | VS2 | Ideal
From $5,594
Compare at $9,121
Save 36.8%GIA | 2.51ct | Oval | L | SI2 | Excellent
From $5,679
Compare at $8,990
HRD | 2.51ct | Cushion | J | SI1 | Excellent
From $5,720
Compare at $5,790
Save 36.8%GIA | 2.51ct | Oval | L | SI2 | Very Good
From $5,808
Compare at $9,194
Save 36.8%GIA | 2.5ct | Oval | L | SI2 | Ideal
From $5,963
Compare at $9,439
Save 36.8%GIA | 2.52ct | Oval | L | SI2 | Very Good
From $5,974
Compare at $9,456
Save 36.8%GIA | 2.5ct | Emerald | L | SI1 | Very Good
From $6,074
Compare at $9,614
Save 38.1%GIA | 2.51ct | Princess | K | SI2 | Excellent
From $6,121
Compare at $9,886
Save 36.8%GIA | 2.5ct | Oval | L | SI2 | Very Good
From $6,205
Compare at $9,822
Save 39.3%GIA | 2.55ct | Cushion | K | VS2 | Excellent
From $6,311
Compare at $10,396
Save 40.4%GIA | 2.5ct | Cushion | J | VS1 | Very Good
From $6,443
Compare at $10,812
IGI | 2.5ct | Oval | K | SI1 | Very Good
From $6,474
Compare at $6,475
Save 11.1%GIA | 2.5ct | Oval | K | SI2 | Excellent
From $6,492
Compare at $7,300
Save 37.5%GIA | 2.5ct | Round | K | SI2 | Excellent
From $6,555
Compare at $10,481
GIA | 2.5ct | Emerald | L | VS2 | Good
From $6,595
Compare at $7,024
Save 14%IGI | 2.5ct | Round | K | SI1 | Excellent
From $6,600
Compare at $7,678
Save 37.4%GIA | 2.5ct | Cushion | K | SI1 | Very Good
From $6,605
Compare at $10,559
Save 19.2%IGI | 2.51ct | Oval | K | VS1 | Very Good
From $6,695
Compare at $8,285
Save 20.6%IGI | 2.51ct | Pear | J | SI1 | Very Good
From $6,695
Compare at $8,437
Save 13.1%IGI | 2.5ct | Princess | J | SI1 | Very Good
From $6,715
Compare at $7,729
Save 19.5%GIA | 2.55ct | Oval | K | SI2 | Excellent
From $6,720
Compare at $8,347
Save 18.5%GIA | 2.51ct | Radiant | L | SI2 | Excellent
From $6,742
Compare at $8,277
Save 38.1%GIA | 2.51ct | Oval | L | SI2 | Excellent
From $6,746
Compare at $10,897
Save 15.4%IGI | 2.51ct | Pear | K | VS1 | Very Good
From $6,790
Compare at $8,024
Save 22.3%GIA | 2.52ct | Cushion | K | SI1 | Excellent
From $6,803
Compare at $8,761
Save 18.7%GIA | 2.5ct | Oval | L | SI2 | Very Good
From $6,818
Compare at $8,388
Save 15.4%IGI | 2.5ct | Pear | J | SI1 | Very Good
From $6,825
Compare at $8,065
Save 14%IGI | 2.5ct | Cushion | H | SI2 | Excellent
From $7,004
Compare at $8,140
Save 36.8%GIA | 2.5ct | Princess | L | VS2 | Very Good
From $7,044
Compare at $11,151
Save 23.3%IGI | 2.5ct | Oval | J | SI1 | Very Good
From $7,045
Compare at $9,190
Save 21.7%GIA | 2.52ct | Cushion | K | SI1 | Very Good
From $7,055
Compare at $9,011
Save 19.2%GIA | 2.5ct | Princess | K | SI1 | Ideal
From $7,120
Compare at $8,816
Save 15.9%GIA | 2.51ct | Oval | K | SI1 | Excellent
From $7,125
Compare at $8,471
IGI | 2.52ct | Oval | K | SI1 | Very Good
From $7,244
Compare at $7,245
Save 21.7%GIA | 2.53ct | Cushion | K | SI1 | Excellent
From $7,245
Compare at $9,256
GIA | 2.5ct | Oval | L | SI2 | Very Good
From $7,265
Compare at $7,631
IGI | 2.51ct | Emerald | I | SI1 | Good
From $7,270
Compare at $7,461
Save 38.1%GIA | 2.51ct | Cushion | J | SI2 | Very Good
From $7,295
Compare at $11,781
Save 36.8%GIA | 2.53ct | Oval | J | SI2 | Very Good
From $7,307
Compare at $11,567
Save 40.4%GIA | 2.5ct | Oval | J | SI2 | Ideal
From $7,340
Compare at $12,322
Save 21.8%GIA | 2.52ct | Cushion | K | SI1 | Very Good
From $7,375
Compare at $9,428
Save 13.4%GIA | 2.5ct | Emerald | K | SI1 | Excellent
From $7,399
Compare at $8,547
Save 16.1%IGI | 2.51ct | Pear | K | SI1 | Very Good
From $7,405
Compare at $8,830
Save 37.5%GIA | 2.51ct | Cushion | K | SI1 | Excellent
From $7,505
Compare at $12,008
Save 37.5%GIA | 2.51ct | Cushion | K | SI1 | Excellent
From $7,505
Compare at $12,008
Save 20.2%IGI | 2.52ct | Oval | K | VS2 | Very Good
From $7,525
Compare at $9,430
Entry pricing in this category starts around $716.
What to Know When Shopping for 2.5 Carat Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $75,159 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 $25,873 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.
Frequently Asked Questions
We currently track 5,307 comparable stones in this segment. Prices start around $716 and go up to $75,875.
Based on the latest market data, the average asking price is about $26,644 with a median around $25,873.
The observed spread is roughly $75,159 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 $26,644. The median price is $25,873, 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 10 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 $75,159 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
2.5 Carat Round Natural Diamond Prices
2.5 Carat Oval Natural Diamond Prices
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2.5 Carat Pear Natural Diamond Prices
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