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Marquise|Natural|GIA

2.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5232973123

Certificate GIA 5232973123

Diamond specifications and retailer prices

From $38,259 NZD
As of November 6, 2026
Save $32,181 NZD (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $70,440 NZD at MOH London · As of November 4, 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 5232973123. Listed at 10 retailers as of November 4, 2026, with prices from $38,259 to $70,440, a $32,181 spread on the same certified stone. MOH London lists it at $70,440. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5232973123
Dimensions13.68 × 7.36 × 4.45 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Feather
Top View
13.68 mm7.36 mm2.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5232973123
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 60.4%

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: Nov 6
Current: $70,440 NZD|Low: $38,259 NZD|High: $73,746 NZD|Avg: $51,488 NZD|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$38,259 NZD
Retailer 4$41,811 NZD
Retailer 10$43,070 NZD
Retailer 9$44,490 NZD
Retailer 2$51,752 NZD
Retailer 6$52,416 NZD
Retailer 3$53,819 NZD
Retailer 8$54,079 NZD
Retailer 5$64,067 NZD
MOH London$70,440 NZD

37 data points across 10 retailers

10 retailers$38,259 NZD to $70,440 NZD

A
Cheapest Retailer
-
$38,259 NZD
Retailer 2
-
$41,811 NZD
View
Price last confirmed 3 days ago
Retailer 3
-
$43,070 NZD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$44,490 NZD
View
B
Retailer 5
-
$51,752 NZD
View
B
Retailer 6
-
$52,416 NZD
View
B
Retailer 7
-
$53,819 NZD
View
B
Retailer 8
-
$54,079 NZD
View
B
Retailer 9
-
$64,067 NZD
View
Most Expensive
B
MOH London
65B18CEAC · Nov 4
$70,440 NZD
£30,747 GBP
View
9 more retailers have this diamond
Prices start from $38,259 NZDSave up to $32,181 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.

A
2.50ct Marquise
$38,259 NZD