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Marquise|Natural|GIA

2.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 17154894

Certificate GIA 17154894

Diamond specifications and retailer prices

From $37,670 CAD
$26,967 USD
As of October 30, 2026
Save $34,220 CAD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $71,890 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct 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 17154894. Listed at 10 retailers as of October 29, 2026, with prices from $37,670 to $71,890, a $34,220 spread on the same certified stone. MOH London lists it at $71,890. 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

2.51
Carat
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 17154894
Dimensions12.71 × 7.07 × 4.63 mm
L/W Ratio1.80
Top View
12.71 mm7.07 mm2.51 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 17154894
Side View
Table 57.0%CrownGirdle: Very ThickPavilionCuletDepth 65.5%

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: $71,890 CAD|Low: $37,320 CAD|High: $72,369 CAD|Avg: $50,162 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 6$37,670 CAD
Retailer 4$43,730 CAD
Retailer 5$45,715 CAD
Retailer 3$46,115 CAD
Retailer 2$55,557 CAD
MOH London$71,890 CAD

40 data points across 6 retailers

10 retailers$37,670 CAD to $71,890 CAD

B+
Cheapest Retailer
-
$37,670 CAD
$26,967 USD
B+
Retailer 2
-
$40,626 CAD
$29,083 USD
View
B+
Retailer 3
-
$41,558 CAD
A$45,769 AUD
View
Retailer 4
-
$43,730 CAD
$31,305 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$43,730 CAD
$31,305 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$43,730 CAD
$31,305 USD
View
Retailer 7
-
$45,715 CAD
A$50,348 AUD
View
Price last confirmed 29 days ago
B+
Retailer 8
-
$46,115 CAD
£25,994 GBP
View
B
Retailer 9
-
$55,557 CAD
€37,878 EUR
View
Most Expensive
B
MOH London
12C425ADA · Oct 29
$71,890 CAD
£40,523 GBP
View
9 more retailers have this diamond
Prices start from $37,670 CADSave up to $34,220 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+
2.51ct Marquise
$37,670 CAD