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Marquise|Natural|GIA

2.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 3555720776

Certificate GIA 3555720776

Diamond specifications and retailer prices

From $22,362 USD
CA$31,059 CAD
As of October 30, 2026
Save $14,394 USD (39%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $36,756 USD at MOH London · As of November 1, 2026
View at MOH London

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 3555720776. Listed at 9 retailers as of October 30, 2026, with prices from $22,362 to $36,756, a $14,394 spread on the same certified stone. MOH London lists it at $36,756. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555720776
Dimensions12.65 × 6.98 × 4.47 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cavity
Top View
12.65 mm6.98 mm2.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3555720776
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $36,756 USD|Low: $22,362 USD|High: $37,198 USD|Avg: $26,719 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$22,362 USD
Retailer 9$22,502 USD
Retailer 3$24,157 USD
Retailer 6$24,480 USD
Retailer 7$25,819 USD
Retailer 8$27,731 USD
Retailer 2$27,809 USD
Retailer 5$28,611 USD
MOH London$36,756 USD

25 data points across 9 retailers

9 retailers$22,362 USD to $36,756 USD

A
Cheapest Retailer
-
$22,362 USD
CA$31,059 CAD
A
Retailer 2
-
$22,502 USD
View
B+
Retailer 3
-
$24,157 USD
£19,021 GBP
View
B+
Retailer 4
-
$24,480 USD
View
B+
Retailer 5
-
$25,819 USD
View
B
Retailer 6
-
$27,731 USD
View
B+
Retailer 7
-
$27,809 USD
€26,485 EUR
View
B
Retailer 8
-
$28,611 USD
View
Most Expensive
B
MOH London
CB5FF2EBF · Nov 1
$36,756 USD
£28,942 GBP
View
8 more retailers have this diamond
Prices start from $22,362 USDSave up to $14,394 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.

A
2.50ct Marquise
$22,362 USD