2.5 Carat Natural Diamond Prices Comparison
As of July 2026, the average price of a 2.5 carat natural diamond is $26,451.2.5 carat diamonds can cost anywhere from $716 to $75,445 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 0.3%.Compare 3,911 verified listings across 10 retailers in the tables below.
2.5 Carat Natural Diamond Market Overview
CaratRadar currently tracks 3,911 verified 2.5-carat natural diamonds listed across 10 online retailers. Prices in this segment range from $716 to $75,445, with an average asking price of $26,451 and a median of $25,665.
The price spread of $74,729 (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.
3,911 diamonds tracked in this segment
Price range: $716 to $75,445
Average price: $26,451
Median price: $25,665
Available across 10 retailers
Savings potential: up to 99.1%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
3,911
$716
$26,451
$25,665
$75,445
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 10.8%IGI | 2.53ct | Oval | J | I1 | Ideal
From $2,449
Compare at $2,747
HRD | 2.5ct | Oval | I | SI2 | Ideal
From $3,897
Compare at $4,105
IGI | 2.51ct | Oval | I | I1 | Ideal
From $3,981
Compare at $4,192
HRD | 2.51ct | Oval | G | I1 | Ideal
From $4,138
Compare at $4,358
HRD | 2.51ct | Pear | J | SI2 | Excellent
From $4,861
Compare at $5,120
Save 19.2%GIA | 2.51ct | Cushion | L | SI2 | Excellent
From $4,938
Compare at $6,113
Save 40.4%GIA | 2.52ct | Cushion | K | VS2 | Ideal
From $5,112
Compare at $8,570
IGI | 2.5ct | Oval | H | I1 | Ideal
From $5,123
Compare at $5,396
HRD | 2.51ct | Princess | H | SI2 | Ideal
From $5,179
Compare at $5,339
Save 38.6%GIA | 2.5ct | Emerald | L | SI1 | Very Good
From $5,204
Compare at $8,476
Save 22.6%IGI | 2.5ct | Round | I | SI2 | Good
From $5,229
Compare at $6,760
IGI | 2.5ct | Oval | K | SI2 | Ideal
From $5,257
Compare at $5,377
Save 38.6%GIA | 2.51ct | Oval | L | SI2 | Very Good
From $5,303
Compare at $8,638
Save 38.6%GIA | 2.5ct | Oval | L | SI2 | Ideal
From $5,336
Compare at $8,690
IGI | 2.51ct | Heart | J | SI2 | Ideal
From $5,346
Compare at $5,630
HRD | 2.51ct | Pear | G | I1 | Ideal
From $5,371
Compare at $5,657
IGI | 2.51ct | Oval | H | SI2 | Ideal
From $5,379
Compare at $5,503
IGI | 2.52ct | Cushion | K | SI2 | Very Good
From $5,394
Compare at $5,465
IGI | 2.5ct | Oval | K | SI1 | Very Good
From $5,416
Compare at $5,780
Save 38.6%GIA | 2.5ct | Oval | L | SI2 | Very Good
From $5,436
Compare at $8,852
Save 38.6%GIA | 2.52ct | Oval | L | SI2 | Very Good
From $5,623
Compare at $9,158
IGI | 2.5ct | Radiant | H | I1 | Very Good
From $5,773
Compare at $6,082
Save 15.2%IGI | 2.5ct | Pear | L | SI1 | Ideal
From $5,834
Compare at $6,878
GIA | 2.5ct | Oval | K | SI2 | Excellent
From $5,869
Compare at $6,003
Save 38.6%GIA | 2.51ct | Princess | K | SI2 | Excellent
From $5,909
Compare at $9,624
IGI | 2.5ct | Cushion | I | SI2 | Excellent
From $5,930
Compare at $6,126
HRD | 2.5ct | Oval | H | SI2 | Excellent
From $5,953
Compare at $6,114
IGI | 2.52ct | Pear | J | SI2 | Ideal
From $6,073
Compare at $6,212
IGI | 2.51ct | Oval | I | SI2 | Excellent
From $6,162
Compare at $6,302
Save 38.6%GIA | 2.5ct | Princess | L | VS2 | Very Good
From $6,225
Compare at $10,138
IGI | 2.51ct | Pear | K | VS1 | Very Good
From $6,246
Compare at $6,250
Save 13.1%IGI | 2.5ct | Cushion | H | SI2 | Excellent
From $6,333
Compare at $7,290
IGI | 2.51ct | Heart | H | SI2 | Ideal
From $6,361
Compare at $6,506
IGI | 2.5ct | Princess | J | SI1 | Very Good
From $6,368
Compare at $6,600
Save 38.6%GIA | 2.51ct | Oval | L | SI2 | Excellent
From $6,449
Compare at $10,502
HRD | 2.51ct | Oval | H | I1 | Ideal
From $6,466
Compare at $6,750
GIA | 2.52ct | Cushion | L | SI1 | Excellent
From $6,484
Compare at $6,774
GIA | 2.52ct | Cushion | K | SI1 | Very Good
From $6,542
Compare at $7,055
Save 13.1%IGI | 2.5ct | Round | L | SI2 | Ideal
From $6,543
Compare at $7,533
IGI | 2.5ct | Heart | K | VS1 | Very Good
From $6,562
Compare at $6,565
IGI | 2.5ct | Heart | G | SI2 | Ideal
From $6,577
Compare at $6,667
Save 37.4%GIA | 2.5ct | Cushion | K | SI1 | Very Good
From $6,605
Compare at $10,559
HRD | 2.53ct | Heart | G | SI2 | Ideal
From $6,633
Compare at $6,924
GIA | 2.52ct | Cushion | J | SI2 | Very Good
From $6,647
Compare at $7,351
GIA | 2.53ct | Cushion | K | SI1 | Excellent
From $6,648
Compare at $6,857
IGI | 2.5ct | Pear | J | SI1 | Very Good
From $6,668
Compare at $7,055
IGI | 2.51ct | Pear | J | SI2 | Very Good
From $6,702
Compare at $6,995
IGI | 2.51ct | Oval | H | SI2 | Ideal
From $6,704
Compare at $6,797
GIA | 2.52ct | Cushion | K | SI1 | Very Good
From $6,724
Compare at $7,375
Save 38.6%GIA | 2.51ct | Cushion | J | SI2 | Very Good
From $6,730
Compare at $10,960
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 $74,729 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 $25,665 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 3,911 comparable stones in this segment. Prices start around $716 and go up to $75,445.
Based on the latest market data, the average asking price is about $26,451 with a median around $25,665.
The observed spread is roughly $74,729 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 $26,451. The median price is $25,665, 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 $74,729 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
2.5 Carat Emerald Natural Diamond Prices
2.5 Carat Cushion Natural Diamond Prices
2.5 Carat Pear Natural Diamond Prices
2.5 Carat Radiant Natural Diamond Prices
2.5 Carat Princess Natural Diamond Prices
2.5 Carat Heart Natural Diamond Prices
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