2.5 Carat Marquise Natural Diamond Prices Comparison
As of May 2026, 2.5 carat marquise natural diamonds usually range from $1,335 to $73,393, with an average price of $32,540.In the last month, prices for these diamonds are up 2.4%.Compare 84 verified listings across 8 retailers tracked by CaratRadar.
2.5 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 84 verified 2.5-carat marquise natural diamonds listed across 8 online retailers. Prices in this segment range from $1,335 to $73,393, with an average asking price of $32,540 and a median of $32,161.
The price spread of $72,058 (98.2% 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.
84 diamonds tracked in this segment
Price range: $1,335 to $73,393
Average price: $32,540
Median price: $32,161
Available across 8 retailers
Savings potential: up to 98.2%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
84
$1,335
$32,540
$32,161
$73,393
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 2.5ct | Marquise | K | SI1 | Very Good
From $9,806
Compare at $9,960
GIA | 2.52ct | Marquise | L | SI2 | Very Good
From $9,820
Compare at $9,822
Save 38.7%GIA | 2.53ct | Marquise | L | VVS1 | Very Good
From $9,835
Compare at $16,047
IGI | 2.51ct | Marquise | J | VS2 | Good
From $10,760
Compare at $11,154
GIA | 2.5ct | Marquise | K | SI2 | Excellent
From $11,507
Compare at $12,191
GIA | 2.55ct | Marquise | K | SI2 | Very Good
From $11,743
Compare at $12,623
Save 23.6%GIA | 2.51ct | Marquise | L | VVS2 | Excellent
From $12,231
Compare at $16,006
Save 27.6%GIA | 2.51ct | Marquise | K | SI2 | Excellent
From $12,546
Compare at $17,328
Save 40.2%GIA | 2.5ct | Marquise | J | SI2 | Very Good
From $12,734
Compare at $21,297
Save 22.5%GIA | 2.51ct | Marquise | L | IF | Excellent
From $13,435
Compare at $17,338
Save 26.7%GIA | 2.52ct | Marquise | K | SI1 | Very Good
From $13,844
Compare at $18,881
IGI | 2.51ct | Marquise | J | SI1 | Very Good
From $14,769
Compare at $15,005
GIA | 2.51ct | Marquise | L | VS2 | Excellent
From $15,107
Compare at $15,475
GIA | 2.57ct | Marquise | K | VS1 | Excellent
From $15,306
Compare at $15,413
GIA | 2.5ct | Marquise | L | VS1 | Excellent
From $15,966
Compare at $16,764
Save 37.8%GIA | 2.6ct | Marquise | K | VVS2 | Good
From $17,091
Compare at $27,479
Save 34.2%GIA | 2.51ct | Marquise | J | SI1 | Excellent
From $18,373
Compare at $27,937
Save 35.4%GIA | 2.5ct | Marquise | J | SI1 | Excellent
From $20,030
Compare at $30,983
Save 33.3%GIA | 2.52ct | Marquise | D | SI2 | Excellent
From $20,574
Compare at $30,837
IGI | 2.5ct | Marquise | I | VS1 | Very Good
From $21,151
Compare at $21,155
Save 16.5%GIA | 2.5ct | Marquise | J | SI1 | Ideal
From $21,571
Compare at $25,820
Save 25%GIA | 2.51ct | Marquise | J | SI2 | Excellent
From $22,196
Compare at $29,600
Save 31.6%GIA | 2.52ct | Marquise | I | SI2 | Ideal
From $22,590
Compare at $33,013
GIA | 2.51ct | Marquise | J | VS2 | Excellent
From $23,530
Compare at $25,026
GIA | 2.51ct | Marquise | I | SI1 | Ideal
From $24,150
Compare at $26,162
GIA | 2.51ct | Marquise | H | SI2 | Ideal
From $24,570
Compare at $25,128
GIA | 2.51ct | Marquise | F | SI2 | Excellent
From $24,674
Compare at $26,479
Save 20.6%GIA | 2.5ct | Marquise | H | SI2 | Excellent
From $24,912
Compare at $31,364
Save 18.6%GIA | 2.5ct | Marquise | I | SI2 | Very Good
From $25,847
Compare at $31,748
GIA | 2.5ct | Marquise | D | SI2 | Very Good
From $26,093
Compare at $27,998
Save 39.9%GIA | 2.5ct | Marquise | F | SI2 | Excellent
From $26,183
Compare at $43,534
GIA | 2.5ct | Marquise | E | SI2 | Excellent
From $27,313
Compare at $30,067
Save 25.3%GIA | 2.51ct | Marquise | J | VVS1 | Very Good
From $29,055
Compare at $38,912
Save 19.2%GIA | 2.51ct | Marquise | G | SI1 | Excellent
From $29,083
Compare at $36,004
Save 20%GIA | 2.54ct | Marquise | G | SI1 | Excellent
From $29,846
Compare at $37,295
Save 32.4%GIA | 2.5ct | Marquise | D | SI2 | Excellent
From $29,970
Compare at $44,346
Save 34.4%GIA | 2.52ct | Marquise | I | VS1 | Excellent
From $30,061
Compare at $45,848
GIA | 2.5ct | Marquise | D | SI2 | Very Good
From $31,490
Compare at $32,013
GIA | 2.52ct | Marquise | G | SI1 | Very Good
From $31,702
Compare at $34,530
Save 20%GIA | 2.51ct | Marquise | D | SI1 | Ideal
From $32,009
Compare at $39,993
Save 34.5%GIA | 2.51ct | Marquise | D | SI1 | Excellent
From $32,306
Compare at $49,303
Save 31.7%GIA | 2.51ct | Marquise | H | SI1 | Excellent
From $32,578
Compare at $47,731
Save 34%GIA | 2.52ct | Marquise | D | SI1 | Excellent
From $33,248
Compare at $50,403
Save 30.4%GIA | 2.51ct | Marquise | E | SI1 | Ideal
From $34,613
Compare at $49,752
GIA | 2.51ct | Marquise | H | VS2 | Excellent
From $35,016
Compare at $38,190
Save 24.1%GIA | 2.5ct | Marquise | D | SI1 | Excellent
From $36,358
Compare at $47,933
GIA | 2.6ct | Marquise | I | VS2 | Good
From $36,497
Compare at $36,880
Save 21.7%GIA | 2.5ct | Marquise | D | SI1 | Excellent
From $36,779
Compare at $46,963
GIA | 2.55ct | Marquise | D | VS2 | Good
From $36,819
Compare at $37,615
Save 21.2%GIA | 2.54ct | Marquise | D | VS2 | Good
From $37,301
Compare at $47,332
Entry pricing in this category 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 $72,058 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 $32,161 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 84 comparable stones in this segment. Prices start around $1,335 and go up to $73,393.
Based on the latest market data, the average asking price is about $32,540 with a median around $32,161.
The observed spread is roughly $72,058 across tracked listings, which is about 98.2% 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 $32,540. The median price is $32,161, 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 8 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 $72,058 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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