2.5 Carat Marquise Natural Diamond Prices Comparison
As of October 2026, 2.5 carat marquise natural diamonds in the 2.50–2.74 carat benchmark range usually range from $1,335 to $103,050, with an average price of $30,583.In the last month, prices for these diamonds are down 0.8%.Compare 151 verified listings across 10 retailers tracked by CaratRadar.
2.5 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 151 verified 2.5-carat marquise natural diamonds in the 2.50–2.74 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $1,335 to $103,050, with an average asking price of $30,583 and a median of $29,048.
The price spread of $101,715 (98.7% 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 use the same benchmark range throughout the page and 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.
151 diamonds tracked in the 2.50–2.74 carat benchmark
Price range: $1,335 to $103,050
Average price: $30,583
Median price: $29,048
Available across 10 retailers
Savings potential: up to 98.7%
Price Range Overview
As of Oct 14, 2026Real market range for this carat, shape, and diamond type.
151
$1,335
$30,583
$29,048
$103,050
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
IGI | 2.5ct | Marquise | J | SI2 | Very Good
From $8,071
Compare at $8,182
Save 12.5%GIA | 2.55ct | Marquise | K | SI2 | Very Good
From $8,642
Compare at $9,871
GIA | 2.5ct | Marquise | E | I1 | Very Good
From $8,854
Compare at $9,001
Save 25.8%GIA | 2.5ct | Marquise | K | SI2 | Good
From $9,044
Compare at $12,185
IGI | 2.5ct | Marquise | I | SI2 | Very Good
From $9,155
Compare at $9,197
Save 39.4%GIA | 2.5ct | Marquise | J | SI2 | Very Good
From $10,057
Compare at $16,606
IGI | 2.51ct | Marquise | I | SI2 | Very Good
From $10,640
Compare at $10,836
Save 40%GIA | 2.52ct | Marquise | K | SI2 | Very Good
From $11,056
Compare at $18,441
Save 26.4%GIA | 2.57ct | Marquise | K | SI2 | Very Good
From $11,781
Compare at $16,001
Save 20.2%GIA | 2.5ct | Marquise | K | SI2 | Excellent
From $11,840
Compare at $14,829
HRD | 2.51ct | Marquise | D | SI2 | Ideal
From $12,276
Compare at $13,016
Save 13.1%IGI | 2.7ct | Marquise | J | SI1 | Very Good
From $12,599
Compare at $14,493
IGI | 2.51ct | Marquise | G | SI2 | Ideal
From $13,042
Compare at $13,443
Save 25.3%GIA | 2.52ct | Marquise | I | SI1 | Good
From $13,086
Compare at $17,513
IGI | 2.51ct | Marquise | J | SI1 | Very Good
From $13,585
Compare at $14,861
Save 20.1%GIA | 2.53ct | Marquise | K | SI2 | Ideal
From $13,782
Compare at $17,259
Save 15.7%HRD | 2.51ct | Marquise | G | SI2 | Ideal
From $14,166
Compare at $16,801
Save 20.2%GIA | 2.5ct | Marquise | K | SI1 | Excellent
From $14,366
Compare at $17,998
Save 30.6%GIA | 2.5ct | Marquise | K | SI1 | Excellent
From $14,572
Compare at $21,001
Save 25.3%GIA | 2.51ct | Marquise | J | SI2 | Ideal
From $14,645
Compare at $19,606
GIA | 2.51ct | Marquise | J | SI2 | Ideal
From $14,699
Compare at $14,801
HRD | 2.51ct | Marquise | H | SI2 | Ideal
From $14,736
Compare at $15,220
GIA | 2.5ct | Marquise | J | SI1 | Good
From $15,001
Compare at $15,723
Save 34%GIA | 2.51ct | Marquise | J | SI2 | Ideal
From $15,156
Compare at $22,970
Save 23.9%GIA | 2.51ct | Marquise | J | SI2 | Excellent
From $15,665
Compare at $20,574
Save 18.3%IGI | 2.51ct | Marquise | I | SI2 | Very Good
From $16,185
Compare at $19,806
Save 18.2%GIA | 2.51ct | Marquise | J | SI2 | Ideal
From $17,199
Compare at $21,034
Save 41.5%GIA | 2.5ct | Marquise | K | VS2 | Very Good
From $17,244
Compare at $29,479
Save 10.8%GIA | 2.51ct | Marquise | J | VS2 | Excellent
From $17,529
Compare at $19,653
Save 40.7%GIA | 2.5ct | Marquise | J | SI1 | Good
From $17,779
Compare at $29,982
Save 40.9%GIA | 2.51ct | Marquise | J | VS2 | Excellent
From $18,074
Compare at $30,606
Save 19%GIA | 2.5ct | Marquise | J | VS2 | Very Good
From $18,115
Compare at $22,375
Save 10.7%GIA | 2.5ct | Marquise | J | SI2 | Excellent
From $18,144
Compare at $20,318
Save 18.3%IGI | 2.5ct | Marquise | I | VS2 | Very Good
From $18,208
Compare at $22,283
Save 18.3%GIA | 2.5ct | Marquise | I | SI2 | Very Good
From $18,501
Compare at $22,636
Save 26.5%GIA | 2.5ct | Marquise | H | VS1 | Good
From $18,519
Compare at $25,200
Save 40.7%GIA | 2.51ct | Marquise | J | SI2 | Excellent
From $18,662
Compare at $31,471
Save 41.5%GIA | 2.51ct | Marquise | J | SI1 | Ideal
From $19,171
Compare at $32,795
Save 19.1%GIA | 2.51ct | Marquise | I | SI2 | Very Good
From $19,189
Compare at $23,714
Save 38.9%GIA | 2.5ct | Marquise | J | SI2 | Very Good
From $19,365
Compare at $31,683
Save 17.7%GIA | 2.51ct | Marquise | J | SI2 | Ideal
From $20,038
Compare at $24,345
Save 13.5%IGI | 2.71ct | Marquise | I | VS2 | Very Good
From $20,330
Compare at $23,504
GIA | 2.52ct | Marquise | I | SI1 | Excellent
From $20,508
Compare at $22,190
Save 42.2%GIA | 2.52ct | Marquise | I | SI2 | Ideal
From $20,610
Compare at $35,641
Save 23.8%GIA | 2.51ct | Marquise | I | SI2 | Good
From $20,870
Compare at $27,390
Save 13.6%IGI | 2.52ct | Marquise | I | IF | Ideal
From $20,961
Compare at $24,269
Save 25.5%GIA | 2.52ct | Marquise | F | SI2 | Very Good
From $21,048
Compare at $28,265
Save 17.1%GIA | 2.51ct | Marquise | J | SI1 | Very Good
From $21,083
Compare at $25,436
GIA | 2.71ct | Marquise | I | SI2 | Very Good
From $21,541
Compare at $23,935
GIA | 2.5ct | Marquise | J | SI1 | Ideal
From $21,571
Compare at $23,968
Entry pricing in this benchmark range starts around $1,335.
What to Know When Shopping for 2.5 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $101,715 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 $29,048 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.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 151 comparable stones in the 2.50–2.74 carat benchmark range. Prices start around $1,335 and go up to $103,050.
Based on the latest market data, the average asking price is about $30,583 with a median around $29,048.
The observed spread is roughly $101,715 across tracked listings, which is about 98.7% from highest to lowest offer in the 2.50–2.74 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $30,583. The median price is $29,048, 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 $101,715 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 the 2.50–2.74 carat Marquise diamond benchmark.