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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 $48,646 NZD
As of November 6, 2026
Save $43,448 NZD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $92,094 NZD at MOH London · As of November 4, 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 November 4, 2026, with prices from $48,646 to $92,094, a $43,448 spread on the same certified stone. MOH London lists it at $92,094. 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
Colour
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: Nov 6
Current: $92,094 NZD|Low: $48,646 NZD|High: $93,455 NZD|Avg: $65,053 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$48,646 NZD
Retailer 4$56,471 NZD
Retailer 3$58,966 NZD
Retailer 5$59,034 NZD
Retailer 2$71,335 NZD
MOH London$92,094 NZD

44 data points across 6 retailers

10 retailers$48,646 NZD to $92,094 NZD

B+
Cheapest Retailer
-
$48,646 NZD
B+
Retailer 2
-
$52,461 NZD
View
B+
Retailer 3
-
$53,666 NZD
View
Retailer 4
-
$56,471 NZD
View
Price last confirmed 16 days ago
Retailer 5
-
$56,471 NZD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$56,471 NZD
View
B+
Retailer 7
-
$58,966 NZD
View
Retailer 8
-
$59,034 NZD
View
Price last confirmed 33 days ago
B
Retailer 9
-
$71,335 NZD
View
Most Expensive
B
MOH London
12C425ADA · Nov 4
$92,094 NZD
£40,199 GBP
View
9 more retailers have this diamond
Prices start from $48,646 NZDSave up to $43,448 NZD

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
$48,646 NZD