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Marquise|Natural|GIA

2.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541932918

Certificate GIA 6541932918

Diamond specifications and retailer prices

From $26,089 USD
As of November 5, 2026
3 retailers carry this diamond
Most expensive: $30,368 USD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541932918. Listed at 3 retailers as of November 5, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.50
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle41.57°
OriginNatural
Grading LabGIA
CertificateGIA 6541932918
Dimensions13.22 × 7.04 × 4.62 mm
L/W Ratio1.88
Girdle conditionVery Thick
Key to symbols
Feather, Crystal
Top View
13.22 mm7.04 mm2.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541932918
Side View
Table 58.0%Crown 37.6°Girdle: STK-VTKPavilion 41.57°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $30,368 USD|Low: $25,625 USD|High: $30,631 USD|Avg: $28,149 USD|+1.5%
77 Diamonds
Retailer 2
October 30, 2026
Retailer 2$25,780 USD
77 Diamonds$30,368 USD

39 data points across 2 retailers

3 retailers

Retailer 1
-
$25,780 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
$26,089 USD
View
Most Expensive
77 Diamonds
MQMB7HRRZSXU · Oct 30
$30,368 USD
£23,912 GBP
View
Price last confirmed 7 days ago
2 more retailers have this diamond
Prices start from $26,089 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
2.50ct Marquise
$26,089 USD