Marquise|Natural|GIA

2.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1555451099

Certificate GIA 1555451099

Diamond specifications and retailer prices

From $41,105 CAD
$29,426 USD
As of October 30, 2026
Save $11,978 CAD (23%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $68,415 CAD at MOH London · As of October 21, 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 G 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 1555451099. Listed at 15 retailers as of October 30, 2026, with a 29% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555451099
Dimensions13.38 × 7.02 × 4.35 mm
L/W Ratio1.91
Culet sizeNone
Top View
13.38 mm7.02 mm2.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555451099
Side View
Table 61.0%Crown 39.7°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $68,415 CAD|Low: $39,455 CAD|High: $68,869 CAD|Avg: $47,411 CAD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 7$39,940 CAD
Retailer 12$41,105 CAD
Retailer 14$41,348 CAD
Retailer 6$43,572 CAD
Retailer 5$43,935 CAD
Retailer 2$44,114 CAD
Retailer 9$45,741 CAD
Retailer 4$45,751 CAD
Retailer 8$47,204 CAD
Retailer 13$47,307 CAD
Retailer 16$48,797 CAD
Retailer 15$49,122 CAD
Retailer 10$51,093 CAD
Retailer 11$53,083 CAD
Retailer 3$59,403 CAD
MOH London$68,415 CAD

15 data points across 16 retailers

15 retailers$41,105 CAD to $53,083 CAD

B+
Cheapest Retailer
-
$41,105 CAD
$29,426 USD
B+
Retailer 2
-
$41,348 CAD
$29,600 USD
View
Retailer 3
-
$43,572 CAD
$31,192 USD
View
Price last confirmed 16 days ago
Retailer 4
-
$43,935 CAD
$31,452 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$44,114 CAD
$31,580 USD
View
B+
Retailer 6
-
$45,741 CAD
£25,783 GBP
View
Retailer 7
-
$45,751 CAD
$32,752 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$47,204 CAD
$33,792 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$47,307 CAD
$33,866 USD
View
B+
Retailer 10
-
$48,797 CAD
£27,506 GBP
View
B
Retailer 11
-
$49,122 CAD
$35,165 USD
View
B+
Retailer 12
-
$51,093 CAD
$36,576 USD
View
B+
Retailer 13
-
$53,083 CAD
€36,191 EUR
View
Retailer 14
-
$59,403 CAD
ZAR 686,997 ZAR
View
Price last confirmed 15 days ago
Most Expensive
MOH London
DD5D6BCC9 · Oct 21
$68,415 CAD
£38,564 GBP
View
Price last confirmed 11 days ago
14 more retailers have this diamond
Prices start from $41,105 CADSave up to $11,978 CAD

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
$41,105 CAD